Hi,
I had the same issue with locked omd files using the 12.10 version.
Previously I had used the option to disable the real time scanning in my antivirus but now I decided to to uninstall my antivirus, reboot and try a clean install again of Opus.
This time it worked and I was able to import certificate licence with no issues.
Removed Opus, rebooted and reinstalled antivirus, rebooted, installed Opus and issue with locked files has returned and I'm unable to install Opus licence.
The antivirus I'm using is Avira and it does allow folder/process exclusions. I tried excluding the process dopus.exe, the path "C:\ProgramData\GPSoftware\Directory Opus" and I still get the locked files when trying to import licence.
At this stage I've given up on Avira so decided to install Kaspersky Free. This has worked fine and I've no issues licencing and now running the latest version of Opus.
I would like to point out that I've had Opus and Avira on my PC for years and have had no issues until last week when all of a sudden it seemed to crash and then come up unlicenced. Perhaps the Avira vendor has pushed out a new set of virus defs or config which caused the issues.
Anyway everything is now working fine again and thanks for your help and guidance,
Stephen
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