Just in time debugger

[linseed]

I have been searching all over internet. I have a pop up window "just in time debugging please select a debugger" I do not have visual studio and the internet options for "disable script debugging" are both checked. Please help!! It is driving me nuts. It pops up all the time

 

[rambleach]

I am having the same problem..

 

[Sunius]

In what circumstances does it pop up?