Before registering a subject, run the “start FIRMM” batch file from the scanner console start menu. If you see “CONNECTED” you should be good to go. If you see “NOT CONNECTED”, FIRMM will not work.
If you see “NOT CONNECTED”, run “stop FIRMM” from the console. Then restart the FIRMM tablet by pressing the power button. Note that it is possible to accidentally put the tablet into desktop mode. If that happens, just restart it again. FIRMM should launch and the tablet should say “not connected” and “please start a scan”. Now, run “start FIRMM” from the start menu again. This time there should be a “CONNECTED” message in the command window. Register your subject and FIRMM should work.
If you do this while a subject is already registered, you will need to close and re-register the subject before FIRMM will work again.