Hi Ken,
Like Adi said, the suspect is your web resource since the error appears after you add web resource.
Steps to narrow down script error.
Steps for IE10
Open a IE window, navigate to the page throwing error, press F12.
Click on script tab, click on start debugging button.
See the console window, if there are any script error, it will show the error there. and also the link to navigate to the error.
If above step does not work, you will have to setup break points and step thru your web resource script.
Regards,
Jithesh