Darrenb:
I had this the other day came up error 50 and just pressed ok. Got no further warnings. Carried out my shift and got a printout at the ènd of the day and no problems on ejecting the card. Can I take it that it is all ok now. Not working now till Wednesday so will have to see then.
If you was able to get a printout the data has obviously been recorded on the driver card so the card should be OK.
Error 50 can often be cured by simply wiping the card/memory chip clean with a clean soft cloth.