Snap not working with circle.

Hi

So for some odd reason my snap is working on all objects within a file except for circles. I have turned all the snaps on and off, regenall, osmode to 0 then reset everything, turned on the magnet, I am out of ideas as to what is causing this on the file. If I open a new drawing file and draw a circle snapping to the object everything works out perfect but once I switch back over to the working file snap refuses to work.