I've been using Retrospect to back up my data for years. Currently I'm using version 6.1.126 with 10.4.11 on my G4. I do an automatic nightly backup from my data partition to a separate hard drive. And once a month I backup to a CD. I've just needed to recover a Numbers spreadsheet, and am horrified to find that the file is not in my nightly backup. None of my numbers spreadsheet seem to have been backed up! Has anyone else noticed that Retrospect just doesn't back up files with names ending in .numbers? Or is this just on my machine? Any idea what might be the cause? Help! PLEASE! Update next day. I'm now using latest Retrospect 6.1.138 and I've done everything its Read Me suggests. I then went to the EMC Retrospect web-site and downloaded the article about the problem. And everything there has already been implemented. But to no avail - my .numbers spreadsheets are still NOT being backed up. Hmmm indeed!