Silk Test workbench database schema error

PC A has Silk Test V18.5, created visual test cases and stored on the SQL server. Test execution instructions from Silk central worked as expected.

I installed Silk Test V 19.0 on PC B, connected to the SQL database. Now on PC A, the following error appears.

Any hints how do I solve this error.

I used the same SQL database username for PC A and PC B

Thanks!