The 2nd line from the Help | About screen shows the Version # and Date. This information is always useful.

When everyone is out of Adagio go into your data folder and detete the EZSEMTAB.xxx where xxx is your data selector.

Then, making sure you are the only one working, start up Time Billing and try the retrieve.

If you still get the message let us know the exact wording...hopefully the message say's what file the system thinks is locked.