>I don't think assigning something to a variable will cause this, but it MIGHT be caused by one of the following:
>
>1) As a side-effect of the function AddJavaScriptMessage().
>
>2) As a side-effect of an error handler.

I never seen anything like this. After a recompile, it started to work ok again. But, it did that on several compiles. The AddJavascriptMessage() simply contains one line which is a string process. There is no error handler.