Ah, I did try pressing that button too, but Merge Plugins still crashed when building a merge. If it worked fine for you then could something else be wrong... And I went back and made sure I ran the program in administrator mode, no more crash. Magic... I could've sworn I spent enough time fully disabling UAC but it seems me and Windows 10 need to have another, long, talk, down in the basement. Thanks again, knowing how much of a dozy sod I can be I'll probably be back with more issues later on.