Problem with CDSpeed v3.00

Please help me !
I have JLMS XJ-HD163D DVD-ROM (firmware: GHR8). As far as I know it is supported by CDSpeed v3.0. I tryed to run disc quality test on a burned audio CD but C1/C2 error-detection didn’t work at all (only speed result was shown). What is the reason for this ?

Many thanks in advance

Just a guess out of the blue but is DMA mode enabled for this drive?

There is a compatibility issue with some LiteOn drives (including the 163D) and the C1/C2 error detection. This has been fixed and a new version will be released later this week.