Cause
This error occurs if the shared thin client files you are attempting to use are currently being updated by another user download. In this case, over 30 seconds have elapsed, and therefore it is likely that the download may have failed and left these files locked.
Action
Check whether another user is performing a download of the shared files you are attempting to use. If that is the case, try again later. If another user download is not taking place, remove the file thinlock.fil from the JADE binary directory and then try again.