Unable to Save As Template....

For some odd reason whenever I attempt to save something as templated, and then proceed to click "Edit Sites..." I get the following error:

While executing receiveArguments, the following JavaScript error(s) occured:

At Line 20 of file "C:\Program Files\Macromedia\Dreamweaver MX\Configuartion\Menus\MM\File_SaveAsTemplate.js": exception throw in native function.




Can Anyone Help Me?

Jay