Are there any know issues with using the UploadAttachments control with a url rewrite module (like the IIS7 rewrite module)? I have a page the works fine when the url rewriting is turned off, but I get a strange 404 error when URL rewriting is turned on. Firebug reports a 404, but the trace logging in IIS reports a 200 status code (OK). Im trying to determine if there is an issue with my rewrite url somehow not handling the request that the control is posting. From looking at the request, it looks fine. Any known issues wth rewriting or tips for where I should look?