Any one have difficulty upgrading to L18? Attempted upgrade tonight and followed instructions and ended with a system totally dead. Used hyperterminal as directed and sent file to system, waited 1 1/2 hors and next thing I know it restarts sending and wait another 1 1/2 hours to no avail. Called Tech Support after first fail and asked if aborting would harm system and if F17 would still work and responce was I Dunno! Will be on site in a.m. to replace CPM.