Postprocessing Script No Longer Working

I have been using a postprocessing script in Windows for some time now but it recently started throwing the following error…

WARNING> 2017-08-23T17:19:07 MCEBuddy.Engine.QueueManager --> Manually selected file G:\Recorded TV\PlexMovies.grab\dd10eec1367a3c10c9b2f77affc62f3cbe2ed5b4\SomeMovieName.ts does not exist or MCEBuddy doesn’t have read permissions, skipping

I can’t tell if Plex is moving the .TS file out of the .grab folder before MCEBuddy can get to it (option 1: does not exist) or if MCEBuddy cannot access it and the script terminates leaving the untouched .TS file for Plex to organize as usual (option 2: script is being run with inadequate permissions).

Does Plex use a specific windows user to run the PostProcessing script? When i double click the bat file it works fine and will echo out to a txt file for me. When Plex runs it, the only evidence it runs at all is the above error from MCEBuddy.

Any help is appreciated.
-Jay

Did you ever get this resolved?

Ive been having a postprocessing issue too. But it seems to me like plex is using the script but also moving the file at the same time like there is no script. Anyone know of a fix for this?