I only use Directory Opus portable (USB version). But I see that it still writes loads of things to the registry, AppData, and who knows where else. A true portable app doesn't write anything to these places, only to its directory (AppDir).
Please try to fix this.
Cheers
It shouldn’t do that. Which things do you mean?
Are you sure it’s Opus itself doing that and not a shell extension something else has installed? We have no control over those, and they’ll do the same within other processes which open a file browse dialog as well.
Parts of Windows may also use the registry within our process.