When you try to catalog a compressed backup created with Symantec Backup Exec, the Cataloging Media page may display the following error: "Unknown compression algorithm."
The Symantec Backup Exec files Beclass.dll and Bestdutl.dll are not copied to a folder specified in the PATH environment variable on the computer where Recovery Manager is installed.
Copy the Beclass.dll and Bestdutl.dll files from the computer where Symantec Backup Exec is installed to the Windows installation folder (%systemroot%) on the computer where Recovery Manager is installed.
To open the Windows installation folder:
1. Open Windows Explorer.
2. In the Address bar, type the following: %systemroot%
3. Press ENTER.