When opening K2 Management > Manage Workflow Rights the following error appears:
"SmartObject property ProcSetID_1 is a required property for selected method List. Value must be set."
This behaviour will occur when installing with Hungarian Regional Settings on K2 (5.0001.1000.1).
Please use the following workaround:
1. Change the regional setting to English.
2. Run a Repair of K2 (5.0001.1000.1) from the installation media on the environment.
3. Then change the Regional settings back to Hungarian.
This was identified as a known K2 issue and is under review.