Sage 100

We just upgraded to Sage 100 ERP from Mas 200 and I got this error this morning. I'm not familiar with it. I've looked through a few areas for help, but haven't found any solution thus far. I'm hopeful that someone has run across this issue before.

In preparation for a migration (and also to reduce backup size, etc) and know I can safely delete .old, .bak and WRK files. I find there are a TON of files in the MAS90/Reports folder, most of them we do not use. 1. What are rp_ files and can I delete…