Unauthorized requests are being swallowed or inappropriately reported as a 500 Server Error

[at88mph]

• Creating a folder in a VOSpace where the user is not authorized to write will return nothing to the user, but the request will fail silently.
• Uploading a file where the user it not authorized to write will cause a 500 Server Error to be reported.

The UI will look for an exception from the client but it is not coming across properly.

[at88mph]

The VOSpaceClient is throwing an IllegalStateException which is unexpected. If the client needs to be fixed then that should happen, but the UI should still be reporting something when an error occurs.