DVDDecryptor Error

I always get I/O error when trying to rip with DVDDecryptor. This happens as soon as I start the program and (I guess it tries to read my disk) This happens even when I try and use robot4rip and/or dvddecryptor by itself. Smartripper works fine everytime. I have heard a lot of praise for DVDDecryptor but am unable to use it. Am I doing something wrong? Any suggestions? Thanx

What is the error? (In full please) I've not quite mastered that art of reading people minds yet :)

[IMG] [/IMG] This is the error I get. Dont wuite know what it means or how to interpret it. Thanx --balbrain

Change the transfer length in the settings to 32k. Your drivers cant handle the default 64k.