I am not able to open zip files in solidworks, used to be able to just drag & drop the zip file into the solidworks window, I have a new machine with a new installation of SW. This used to work on my previous machine, but alas not on this new one.....

Any ideas?

Have tried installing various zip programs ( 7 zipm, win zip etc etc) but does not make any difference.

Have saved off a known good solidworks test part and zipped it, then tried to open that part but still no good....

Thanks, Damian