I just purchased the portable version and installed it fine. I also run this on my PC.
I took the time tonight to recreate/clean up my PC version's toolbars and then built the portable toolbars and ejected the USB.
I opened up DO on my PC and I had totally overwritten my new PC toolbars. I renamed them differently, so I am sure what happened.
To prevent this from happening again, can you please let me know how to run the two different versions from the same PC? I realize that this is total user error.
Make sure you fully exit Opus before switching between portable and non-portable versions. If Opus is still running in the background then attempting to run the other version will make the currently running version open a new Lister.
You can check which version you're running by going to /home in the location field - it will take you to either your hard drive or the USB drive.
I did as you asked and exited out of DO on the desktop and went to the USB. It opened up DO on the desktop.
I removed DO from the USB. Before I reinstall, are there any files that I need to remove anywhere else so that the link between the two is totally gone?