Sage 100

EES 1.3 (MAS 200 4.3) - Error 12 on launch of GL_trialbalance. No program or line info, just yellow exclamation mark. Only happens in one company out of many. GLDetail rebuild showed errors, but the error 12 happens with either the original file or the rebuilt one in place. Reinitialized trial balance work file as well, same error. Any ideas?

Error 12 means it can't find a file, or it's trying to define a file that already exists.