Doing something twice in rapid succession (ie. pressing "Create" on something twice, like double-clicking) will cause the GUI to report error on the command. Even though the first might be successfull, the second -will not- and thus the only response given to the user is "Command failed."
Possible solution: Disable the Create-button until a reponse from the server har been recieved. This brings forth the need for a separate thread checking for server timeouts, and re-enabling the button if too much time has passed since last communication with the server.
Logged In: YES
user_id=1989563
Originator: YES
Present in all revisions of the software, should be considered a near-critical bug.