I get the same error since the update to version 1.0.92. All entries get displayed the error during login. Pressing F5 after you are logged.
Chrome shows the following error:
Firefox shows the following error:
Please Add in Update +1
UserPro OFF
UserPro ON
User Switching addon can be found here: http://wordpress.org/plugins/user-switching/
the second addon showing the same problems
User Role Editor addon can be found here: http://wordpress.org/plugins/user-role-editor/
Also, the user will delete the link no longer appears. I hope you have an idea for me because I need this for my addons page.
Thanks in advance
greeting
Florian
On the same problem I am also encountered today. If UserPro was activated missing the Switch To button.