Interesting Ricardo. So you're offset is 0. I just check in a little fix to catch that case. Version 1.0.2 should work. Let me know if you have any other problems. You can check that out of CVS right now if you want using the openacs-5-2-compat flag OR just eyeball the latest change on the 5.2 branch for the file aggregator-procs.tcl and apply that to your installation.
Ben - I didn't realize the repository was bombing. I think Dave's on vacation this week so we'll have to ask him to look into when he gets back.