Tech support request

An email from a reader said:

 . . .  when I click on other sites on the side bar I get a blank page. Might be me, but have closed your site and then re-installed it – same result.

I tried clicking on other sites from a laptop and our office computer and had no problems.

Has anyone else had problems?

Whether or not you are the reader, and I, would appreciate advice on how to fix the problem.