Blackbaud NetCommunity users may need to backup their SQL transaction logs for informational purposes. Sometimes these logs become to large to backup to a disk, and you will need to adjust settings in SQL.
Change the database options from Full Recovery mode to Simple Recovery mode. This will reduce the file size and enable you to backup the SQL log. Please contact the appropriate software vendor or IT professional for assistance with this process or issue, which is beyond Blackbaud's scope of support.