hi Nick:
I'm sorry this isnt working for you, some quick things to check.
Also can you add a --dump_request to your gtaskqueue command? That may give you some more information about whats going on. Another thing we've seen in the past is due to using
multiple logins on the browser, make sure you're authorizing the right account.
If all this is fine, please share the command line you're using with gtaskqueue and I can take a look.
Thanks
Vivek