Cannot Save or Load file from Editor 2024

It's showing this black window with no other option, the same thing with load. I tried to move to a different folder the fmf files and deleted all fmf files but still the same error.

Can you please help me, cause it's driving me crazy. 

Nevermind…

Unistalled it and reinstalled it. It seems that after I put additional fmf files that I downloaded from other websites, it was crashing maybe…?

But reinstalled it after I put the fmf files again and now it's working. 

I'm leaving this post though here for those that might this problem too, cause it was driving me crazy that I couldn't find anything on the web about this.