I am currently using an evaluation copy of jira with greenhopper plug in. I want to be able to move tasks assigned to a different user from To Do to in progress. But there are some tasks i cannot move. Sometimes i can move tasks assigned to different user's sometimes i can't. I can't see any obvious differences but this is critical to the way we work.
I am using the default workflow and haven't set up any conditions or validators for transitioning through a workflow