I'm having trouble getting the jQuery Form plugin to work with google app engine blobstore - I'm pretty sure its because the blobstore upload handler mandates a redirect response, and the plugin doesn't handle that correctly - it returns a null responseText, which I assume response body of the redirect itself, rather than the redirect target, not sure though. I did originally post this question on stack overflow, and there's some additional information there, including the code I'm using.  I also posted an issue here.  Any ideas for getting ajax file uploads working with the app engine blobstore much appreciated.  Cheers,

Colin