I have the same problem. Fixes did not help. I am using MO2. I have 1 FNIS installation that I run on different profiles. Usually this is not an issue. But sometimes, I dont know what causes it, I get the error 57 (process canot access "FNISListCollect.txt") I check "File Redirection" when this happens.... When I uncheck File Redirection it works, but then of course I get other problems.... What a mess?! Any directions? (BTW: Restarting Windows did not help, deleting meshes or any other folder did not help, I run FNIS through MO and neither is installed in programs folder of windows)