I've built a web application that uses a GP service to extracts data (using a modification of the Clip and Slip) using the ArcGIS for Javascript API. The GP service works via URL and within ArcGIS Desktop. When I try to submit a job through the application, a single GET request is made to my server and I get the error: "Error submitting job..... code 500." I'm using HTTPFox to watch the traffic between browser/server. Note: I'm submitting the required parameters and I believe I am referencing the correct URL to the GP service "<servername>/ArcGIS/rest/services/GPServer/<toolname>"