I upgraded to 4.1. I did not see any issues during the upgrade. It all seems to have went okay.

But in the ACP I cannot access the Members tab. I just get a blank screen.

All non-IPS apps and plugins are deactivated.

Any help?

Do you use Country Field? If so, the latest versions fix the disabled plugin issue (meaning, it now works even if disabled).

That was it. Thanks!