Bit of an odd one this, not sure whats going on but I have a workflow that migrates workflows from our Dev to Prod server (also checks if its an upgraded version or a new workflow), worked on it for ages and finally got it working a couple of months ago. Now I have a user who's been off long term and come back and cannot get the workflow to run and migrate his workflows, its also the same for me, I cant migrate his workflows either! If I take ownership of the sample workflow we created (just a text input tool, does nothing basically) then the migration workflow runs, transfer back to the user and it fails. The workflow uses my API Key since I dont want to enable API access for End Users, I am the Admin of the servers, Ive also asked users to try and the one who got back to be ran it for a workflow he created and it worked fine, so it seems that its something to do with this user, but what? The user can has permissions setup on everything other than API access (same as other users), I also added myself to his studio to see if that made a difference, it didn't - basically, anybody got any ideas of things to check?