I have been now using SS for couple of months and find it quite extensible. But there is one issue which leaves me stumped, the "Javascript Parse Error".

I have no idea why and when this errors pops up. The same code will work fine on one server but will give "Javascript Parse Error" on another.

What are the most common causes of this error? How do I go about finding the cause of this error. Any information will be helpful.

Yes, I know I can use firebug to debug JS code.

But the thing is that I am not changing or adding any JS code. The site is using the stock JS code that came with the script. The error is triggered by something in my custom modules (though I have seen the error occur even without any custom modules).

And just to clarify, the "Javascript Parse Error" notice I am referring is to the one the appears sometimes when you are try to save or publish the page.