I have tried everything from version 1.0 up to version 1.4.0 and the same issue. Chitu Slicer works just fine but Box always hangs if I try to load a file, save a file, or do anything that opens a Windows Dialog box. I can drag and drp a file and it opens fine but cannot save it once supports are added. Very frustrating Searched every combination of "windows, win7, hangs, dialog, opening, file, saving file" etc and see no similar reported issues. Any ideas, suggestions, or thoughts would be appreciated.