There is a reason many people loathe Microsoft software. Before you consider flaming me for that statement, I realize all software has flaws, bugs and eventually crashes. In my experience, even if it’s patched and up to date, the following image happens FAR too frequently with Microsoft software.
I don’t recall having the same issues with Concept Draw, even with complex diagrams. Since I’m just tired of having to redo work over again, good-bye Visio, I’ve just purchased your replacement.