Appreciate all the help here, double checked everything again, no date parameters, actually no parameters at all, verified that in the Crystal report and the Solution Builder. I'm using Crystal 2008, have a total of 9 files in this rrd that runs the first day of every month, each one of those runs and emails fine, except for this one. Did a Verify Database in the Crystal, there was an update but it did not fix the issue. Within the Solution Builder, we only get this error if doing it via email, all other types (view, print, etc.) work fine. The only other difference I see with this report is that this report is using tables from our ERP system, the other report uses Views.