Strange... cause I just tried it again with 194, and it's the same thing.... here are my steps exactly:
-Open any project then save
-Make a small change, and save again so that the backup1 file gets created
-Right click on backup1 in explorer, go to add to archive and start archiving the file... pause while it's accessing the backup1 file... my pause happened at 10%, but I really don't think it matters.
-Go back to C2, make another small change, and then just press CTRL+S. It'll sit at the "Saving..." screen permanently.... no way of getting out of this.
Perhaps one way would be a cancel, or a close window option on the saving screen, to cancel the save in progress? Just a thought.... that would get rid of this issue anyway... and other problems when you press save by accident for example.