Just in the last day or so, if I go into a document and try to ctrl+click in the table of contents it gives me the following error message:

"this operation has been canceled due to restrictions in effect on this computer. Please contact your system admin"

I have not altered the program to my knowledge and this is my home computer.

I tried deselecting the "Use ctrl+click to follow hyperlinks" option in tools/options/edit to no effect.

I get the error in both newly created documents and in old ones where TOC used to work.