I updated to version 1.9.0.540 today and it has the following problem.
When Registry Cleaner is done it's scan the Registry Health Score bar shows (only available with full scan)
Also the Registry Scan Speed bar shows (only available with full scan)
I uninstalled version 1.9.0.540 and reinstalled version 1.9.0.531 and Registry Health Score bar and Registry Scan Speed bar work properly.
I'm not confident that version 1.9.0.540 is working properly so will continue to use version 1.9.0.531 until a new update to fix version 1.9.0.54 is released.
Doug