Hi Michael,

re:
> When I set a .3dm file to Read-only in Windows (File Properties), then edit it in Moi and click
> save, the original file will be overwritten by Moi. When i check file properties afterwards,
> read-only is unchecked.

The original file isn't being overwritten, what happens is the original file is renamed to filename_bak.3dm and then a new file with the original name is being created. If you open up the _bak.3dm file and check its contents you should see it is your original file and it still has the read only property set on it.

But I agree that is not proper behavior, what should happen is if the filename used for Save is read-only it should do a "Save As" and ask you for a new filename instead, I'll set that up for the next V4 beta. Thanks for reporting it!

- Michael