Unexpected JDWP 21 error

Question

HttpConnection conn = (HttpConnection) Connector.open (strDefURL + strBloggersURL);

I have this line that throws "InternalException: Unexpected JDWP error: 21", I use it to get some XML back from the servlet I created. It is strange that the string is later populated with XML from the servlet. I can't make it out, although obviously I need to debug it from top to bottom, this is the first error in my code.

Could not find a valid ticket for today, I added one: http://netbeans.org/bugzilla/show_bug.cgi?id=224188