I've spent most of the time that I have had my LX90 trying to get a bug free handbox software build. I currently have version 40ff with D1ck Seymore's patch and have no problems. I suggest trying that version (as it's OK on mine) to see if your problems disappear. All old versions are available at
http://www.weasner.com/etx/autostar/...downloads.html Make sure you check your handbox type before reloading and that you have a correct build for your handbox type. Also make sure you have the latest download software (V4.2) which is also on Weasners site. Once you have finished, reset the handbox, recalibrate and retrain. Hopefully your problem is software related.