ipernity API users / Discussions

Hi;
I'm having problems with doc.set the following call gives back error 100 (api key missing) even though the signature is correct (I checked it against with the wizard) and I made the request via post (via get i get a different message about using post... :) )

Here's the url (i tried xml too with same result)

here's the signature unencoded (obviously I've blanked the secret and auth token!!!!)

the key; secret and relevant signature work fine for doc.get ?

api.ipernity.com/api/doc.set/json?api_key=49c520350000274Cc16c20381f7be3b9&doc_id=4711896&title=grated&description=Grated&auth_token=00000-00000-0000000000000000&api_sig=468717040dc2dfe2f5da23f31714f745

Signature (line breaks with ... are there so it fits the box; they aren't there in the call!)
api_key49c520350000274Cc16c20381f7be3b9auth_token...
00000-00000-0000000000000000descriptionGrateddoc_id4711896...
titlegrateddoc.set0000000000000000