The blanc disc you inserted is "certainly" new/unused?
Does it work with regular single layer disc to burn?
The version of the program will not have any impact, sounds more as a dying burner it if can't load a blanc DL Verbatim disc.
If the burner can't burn the best media on the market and a cleaning disc does not help, get a better burner/external burner. SlimLine burners are tricky ones.