I'm experiencing a strange problem with file uploads to Blobstore (runtime: Java, appid: teamwork-client-services). POSTing a request with file data from client's browser to Blobstore service URL (retrieved via call to createUploadUrl()) causes a status 500 response with no explanation. Request gets never redirected to my server-side upload handler.
Just checked two other applications (one of them uses Python runtime). Got the same behavior. GAE System Status console shows 100% availability, but I'm not sure if Blobstore status is monitored there.
Could anyone help me figure out what's going on? Thanks in advance.
Just letting you guys know - seems like the Google AppEngine team agnoledged the problem and solved it just now: https://groups.google.com/forum/#!topic/google-appengine-downtime-notify/jWjCxoPOP8Y