Unmerging - I'm desperate for help

Hi! I've recently started clearing out some of my CC, and I of course had to unmerge my three large files. I have used ts4 studio to merge all of them. I unmerged my merged 1 and merged 3 package with no problem at all. But I can't seem to unmerge my merged 2 package no matter what I do. The merged file says that it's 1,9G, but when I try to unmerge it an error code shows up saying it contains zero files. That can't be possible at all. And the size can't be the problem either as I have unmerged even bigger files before this one. What now?? It's driving me crazy and I can't find any solutions in other threads. Also the CC in this merged package no longer shows up in my game as it did before I tried unmerging it for the first time Thanks in advance!



Edit: I reinstalled my pc and now the CC from the troubled file works and shows up in the game, but I still can't unmerge it