Hmmm, I can't see anything obvious. I know this can be be a bear b/c I've done it too. 10 seconds is all you got, unless you move to a task. Although, it will allow you to load any size file to the store, but after its loaded you got 10 seconds to do processing. It shouldn't hang.
Can you find the file in the blobstore after running above and before you think it hangs? It should be before you hit the upload servlet? http://code.google.com/p/gwt-examples/wiki/DemoGAEMultiFileBlobUpload - here are some more notes I put together on blob stuff http://code.google.com/p/gwt-examples/wiki/gwt_hmtl5#Upload_Canvas_Image - another thing I do to upload Brandon Donnelson http://gwt-examples.googlecode.com -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.