ActivePatch Library Error Codes
	AP_ERROR_INVALID_LICENSE The license for this product is invalid. This error is returned if the installed license is not valid for the current version of the product.   AP_ERROR_PRODUCT_NOT_LICENSED This product is not licensed to perform this operation. A licensed copy of the product must be installed to create patch files or packages.   AP_ERROR_INVALID_PARAMETER An invalid parameter has been passed to the function. This is a general error which occurs when a required parameter is not passed correctly to a function. Typically this indicates that an invalid memory address has been specified.   AP_ERROR_INVALID_HANDLE An invalid handle has been passed to the function. This error is returned when an invalid package handle has been specified. The handle may have been previously closed, or contains an invalid value.   AP_ERROR_NO_HANDLES No handles are available. This error is returned when all available package handles have been allocated for the current process. A maximum of 256 handles may be opened by a process. Unused package handles should be closed, which will release any locks on the package and free the handle.   AP_ERROR_BUFFER_TOO_SMALL The specified buffer is too small to contain the requested data. Increase the amount of memory allocated for the buffer and call the function again.   AP_ERROR_OUT_OF_MEMORY Out of memory. All available memory on the process heap has been allocated.   AP_ERROR_INTERNAL_STATE Internal state error. There has been an unexpected change in the internal state information maintained by the library. This error may indicate memory corruption within the application.   AP_ERROR_ACCESS_DENIED Access denied. The current process does not have permission to access the file or resource on the local system. Accessing or updating system files may require that the current process have administrator privileges.   AP_ERROR_OPERATION_CANCELED The current operation has been canceled.   AP_ERROR_PATH_NOT_FOUND The specified file path does not exist. One or more of the directories in the file path do not exist.   AP_ERROR_FILE_NOT_FOUND The specified file could not be found on the local system.   AP_ERROR_FILE_NOT_AVAILABLE The specified file is not available. This error is returned if the operating system has indicated that the file has been moved to offline storage.   AP_ERROR_FILE_EXISTS The specified file already exists on the local system. This error is returned when a file exists and cannot be overwritten.   AP_ERROR_FILE_EMPTY The specified file is empty. This error is returned when any empty file is specified as a parameter to a function which requires that the file contain one or more bytes of data.   AP_ERROR_FILE_READONLY The specified file is read-only and cannot be modified. This error is returned when a target file has the read-only attribute set, and the option to overwrite existing files has not been specified.   AP_ERROR_FILE_MODIFIED The specified file has been modified. This error is returned when an attempt is made to update a file which has already been modified.   AP_ERROR_NO_FILES_FOUND No files were found that matched the specified file name. This error is typically returned when a file wildcard does not match any files in the directory.   AP_ERROR_NO_FILES_MODIFIED No files have been modified. This error is returned when comparing two directories, and no files have been added, removed or modified.   AP_ERROR_IDENTICAL_FILES The specified files are identical. No operation is performed because there is no difference between the two files.   AP_ERROR_INVALID_FILE_NAME The specified file name is invalid. The file name may contain invalid characters or one of the components of the file path may not specify a directory.   AP_ERROR_INVALID_FILE_PATH The specified file path name is invalid or is not a directory. This error is returned when a regular file name is passed as a function parameter, or one of the components of the path is not a directory.   AP_ERROR_INVALID_INSTALL_PATH The specified file installation path is invalid. This error is returned when one of the components of the installation path is not a directory.   AP_ERROR_NEWER_FILE_TIME The file modification time is newer than the specified time value. This error is returned when a reference file has a newer modification timestamp than the updated file. This indicates that the reference file has been modified after the updated file was created or modified.   AP_ERROR_NEWER_FILE_VERSION The file version is newer than the specified version. This error is returned when a reference file version number is greater than the updated file's version number. This indicates that the reference file has been modified after the updated file was created.   AP_ERROR_INVALID_VERSION The specified file version is invalid. The version number for the file does not match the version information stored in the patch file.   AP_ERROR_INVALID_PLATFORM The specified platform identifier is invalid. This error is returned when an invalid platform is specified as a parameter to a function, or when a patch file contains invalid information about the platform that it may be applied on.   AP_ERROR_PLATFORM_NOT_SUPPORTED The specified platform is not supported. This error is returned when an attempt is made to apply a patch file on a platform that is not supported. For example, attempting to apply a patch targeted for the Windows NT/2000/XP platform on a Windows 95 system.   AP_ERROR_FILE_NOT_TRUSTED The specified file has not been digitally signed or the signature is invalid. This error is returned when it is required that a Windows PE module (an executable, library or control) be digitally signed, but the signature is either not present, or is not trusted on the local system.   AP_ERROR_INVALID_PASSWORD An invalid password was specified. The patch file or package requires a password to access the file. Passwords may be of any length, and are case-sensitive.   AP_ERROR_INVALID_EXPIRATION The specified expiration period is invalid. This error occurs when attempting to specify an expiration period that exceeds the maximum number of days that a patch may be applied before it expires. To specify that a patch or package file should never expire, use a value of zero.   AP_ERROR_PATCH_EXPIRED The specified patch file has expired. The creator of the patch has limited the number of days that the patch may be applied on target systems.   AP_ERROR_PACKAGE_EXPIRED The specified package file has expired. The creator of the package has limited the number of days that the patch may be applied on target systems.   AP_ERROR_PATH_NOT_CREATED Unable to create the specified file path. This error is returned when an attempt to create a directory path fails because one of the path components already exists or the current process has insufficient permission to create the directory.   AP_ERROR_FILE_NOT_CREATED The specified file has not been created. This error is returned when a file could not be created on the local system. The current process may not have permission to create the file, or there may not be sufficient available disk space on the selected volume.   AP_ERROR_FILE_NOT_MODIFIED The specified file has not been modified. This error is returned when a file cannot be updated on the local system. The current process may not have permission to modify the file, or there may not be sufficient available disk space to create a temporary copy of the file during the update process.   AP_ERROR_FILE_NOT_REPLACED Unable to replace the specified file. The error occurs if the specified file is in use by another process and cannot be replaced when the system is restarted.   AP_ERROR_FILE_NOT_REMOVED Unable to remove the specified file. This error occurs if the file is currently in use and it cannot be removed after the system is restarted.   AP_ERROR_FILE_NOT_EXTRACTED Unable to extract the specified file. This error occurs if an attempt is made to extract a file that is to be removed from the system. If a file is to be removed, only information about the target file is stored in the package. There is no data available to extract.   AP_ERROR_FILE_NOT_COMPRESSED The specified file does not contain compressed data. This error is returned if the file has not been compressed, or if the data has been corrupted.   AP_ERROR_FILE_NOT_EXPANDED The specified file could not be expanded. This error may occur if the process does not have read permission to access the file, or if there is not enough temporary disk space to store the expanded data.   AP_ERROR_FILE_COPY_FAILED Unable to create a copy of the specified file. This error occurs if the process does not have permission to create a copy of the file. This may occur if process cannot read the original file, create a new copy of the file in the specified directory, or if the destination file already exists and has the read-only attribute set.   AP_ERROR_COMPRESSION_FAILED Unable to compress the specified data stream. This error indicates a failure in the internal data compression engine.   AP_ERROR_FILE_BACKUP_FAILED Unable to create a backup copy of the specified file. This error occurs if the process does not have permission to create a backup copy of the file. This may occur if process cannot read the original file, or create the copy of the file in the same directory as the original file.   AP_ERROR_INVALID_REVERT_FILE The specified patch package revert file is invalid. This error is returned if the file does not exist, does not specify a regular file or does not have the appropriate signature that identifies it as a package revert (undo) file.   AP_ERROR_PACKAGE_REVERT_FAILED Unable to revert the previously applied package. This error occurs when an attempt to revert an applied package has failed, and may indicate a corrupted revert file.   AP_ERROR_INVALID_HEADER The specified file contains an invalid header block. This error occurs if an incorrect file was specified or if the file data has been corrupted.   AP_ERROR_INVALID_PATCH_ALGORITHM The patch file was created using an unsupported algorithm. This error occurs if a patch file was created with a later version of the library using a different algorithm or if the patch file has been corrupted.   AP_ERROR_INVALID_CHECKSUM The specified file contains an invalid checksum value. This error indicates that the patch file data has been corrupted.   AP_ERROR_INVALID_FILE_TYPE The specified file is not a supported file type. This error occurs if a directory or device file was specified instead of a regular file.   AP_ERROR_INVALID_FILE_SIZE The specified file contains an invalid file size value. This error occurs when applying a patch and indicates that the original file on the local system is not the same size as the file that was used to generate the patch.   AP_ERROR_INVALID_FILE_TIME The specified file contains an invalid timestamp. This error occurs when applying a patch and indicates that the original modification timestamp on the local file is not the same time as the modification time for the file at the time the patch was created.   AP_ERROR_INVALID_HUNK The specified file contains an invalid hunk record. This error indicates that the patch file data has been corrupted.   AP_ERROR_INVALID_BLOCK The specified file contains an invalid data block. This error indicates that the patch file data has been corrupted.   AP_ERROR_INVALID_CONTEXT An invalid encryption context has been specified. This error indicates a failure in the internal encryption engine used to create secure patch and package files.   AP_ERROR_DECRYPT_FAILED Unable to decrypt the data stream using the specified context. This error occurs if a patch file was created with a later version of the library using a different encryption algorithm or if the patch file has been corrupted.   AP_ERROR_ENCRYPT_FAILED Unable to encrypt the data stream using the specified context. This error indicates a failure in the internal encryption engine used to create secure patch and package files.   AP_ERROR_FILE_CREATE_FAILED Unable to create the specified file. This error occurs if the process does not have permission to create a file in the specified directory.   AP_ERROR_FILE_OPEN_FAILED Unable to open the specified file. This error occurs if the process does not have permission to access the specified file, or if the file has been opened for exclusive access by another process.   AP_ERROR_FILE_READ_FAILED Unable to read from the specified file. This error occurs if the process does not have permission to read the contents of the file.   AP_ERROR_BLOCK_READ_FAILED Unable to read the specified data block. This error occurs if a data block cannot be read from a patch file. The process may not have permission to read the file or the file data may be corrupted.   AP_ERROR_HUNK_READ_FAILED Unable to read the specified hunk record. This error occurs if a hunk record cannot be read from a patch file. The process may not have permission to read the file or the hunk record chain may be corrupted.   AP_ERROR_FILE_WRITE_FAILED Unable to write to the specified file. This error occurs if the process does not have permission to write to the file, or if there is insufficient disk space to store the data.   AP_ERROR_BLOCK_WRITE_FAILED Unable to write the specified data block. This error occurs if the process does not have permission to write to the file, or if there is insufficient disk space to store the data.   AP_ERROR_HUNK_WRITE_FAILED Unable to write the specified hunk record. This error occurs if the process does not have permission to write to the file, or if there is insufficient disk space to store the data.   AP_ERROR_END_OF_FILE End of file. This error occurs when reading data and the end of the file is encountered unexpectedly. This indicates that the file data may be corrupted.   AP_ERROR_PACKAGE_READONLY The specified package has been opened in read-only mode. To modify the package contents, including deleting or renaming files in the package, it must be opened in update mode.   AP_ERROR_PACKAGE_LOCKED The specified package is locked by another process. This error occurs when another process attempts to access a package while that package is being updated or applied on the local system.   AP_ERROR_NO_RESOURCE_TABLE No resource table has been created for this package. This error occurs when attempting to load a package resource and no resources have been stored in the package.   AP_ERROR_INVALID_RESOURCE_TABLE The specified package resource table is invalid. This error indicates that the resource table in the package has been corrupted.   AP_ERROR_RESOURCE_NOT_FOUND The specified resource does not exist in the package. This error occurs when attempting to load a resource that has not been stored in the package.   AP_ERROR_INVALID_PROPERTY The specified property value identifier is invalid.   AP_ERROR_PROPERTY_NOT_DEFINED The specified property has not been defined. This error occurs when attempting to read a package property value that has not been previously defined.   AP_ERROR_FILE_LOCKED The specified file has been locked by another process. This error is returned if a file on the target system has been opened exclusively by another process and cannot be read. The process which has opened the file must be terminated before applying the update.