I'm just about to freak out. I currently have to work on a website that some other guy did and I am asked to maintain etc. It uses jQuery and a bunch of drupal modules. At *some* point i get some syntax error, so that some js works, and some does not. My big big problem is to find the syntax error. Neither Firebug, nor WebInspector give me decent information:

```
Error: uncaught exception: Syntax error, unrecognized expression: //

```

Yeah… that's it. No lines, no filename, no more hints. Has anyone an idea how to deal with this?

Thanks for any usefull hints.