Rhino 6 "create backup (.3DMBAK) when saving" uncheaked still saves

Rhino 6 "create backup (.3DMBAK) when saving unchecked in options>files. Still saves every time. No big deal, but along with opening .stl files in Rhino 5 instead of 6 (double click on .stl) no matter if I choose (Open With Rhino 6), seems to be something to fix (bugs). ThanksCapture

Can you reset the file association for .stl to V6 via

Control Panel\Programs\Default Programs\Set Associations



Did that already. Did not work. Thanks

I thought my registry was somehow corrupted, that’s why the un-check option did not work for me. I recently build a new workstation and noticed this happening to a brand new Rhino install…

I really don’t want .3dmbak to be created, it was possible in the past via the options setting mentioned above but for a long time the option is broken.

Can we have that fixed pls?

Hello - as far as I can see this works as expected here for 3dm files.Can you please run SystemInfo in Rhino and post the results?


Hi Pascal,

.txt file also attached:
SystemInfo.txt (1.7 KB)

Annotation%202019-05-10%20154226 SystemInfo.txt (1.7 KB)

Hello - so this is on Export, not Save, correct?



Yes, maybe that’s why it was hard to pinpoint all this time?