An error occurred during local report processing. Index was outside th

[LowellATurner]

I started getting this error this morning when I tried to preview reports. Last week, everything worked fine, and no one else logs on to this machine when I'm not here. The query behind the report works fine. This happens on all but one of the reports in the solution. I've blown away all the rdl.data files in the solution, and the one for the working report gets recreated, but the rest continue to fail. Anyone got any ideas? Thanks in advance.