Weird super admin menu access bug

Hey guys,

I have a (hopefully not unusual) issue occurring with one of our super admin records. When I login as a specific user I noticed that when I click on "all pages" or some other default menus from the left hand side on our main site, the page shows blank or gives me a 500 error.

I spoke with our hosting and there were no issues. If I login as other super admin users that problem doesn't exist. We are and plan to continue to heavily use the site cloner plugin. We have many clients using our sites. At this point we're getting close to 200 subdomains.

Many of those sites are assigned to this specified user. Could this be an issue? Are there any other tips or ideas you have that may be causing this?

I'm at a loss as to where to start, and it's strange that it is only happening under one user. However, there was one other instance last week where a super admin couldn't see a function of one of our plugins. Once we created him as a new user the problem went away.