Have you every had had your SocialEngine profile work as well as you expect?
Now when you visit a profile you need to click on Activity to see what the user has been up to?
Well it seems its a common fault within the SocialEngine Platform.
The Fault occurs when you have disabled plugins still sitting within a layout, due to the plugin being disabled Social Engine does not remove it from any Active Layout Templates.
To fix this problem go to your Admin Panel and Layout Editor select Members Profile.
Once you have loaded the template you will see Shaded Widgets which are inactive, if you can remove the widget do so otherwise move the widget to the bottom of the Tab Table click on Save Changes and your done.
If you go back to a members profile it will load without any issues now.