No Seek Complete Error in DJ 2.xxxx

I successfully burned my first cdi image (NFL2K1) without difficulty (when I really didn't know what I was doing!). Since then every cdi image I have tried to burn fails...the read buffer increases to about 30% then crashes to zero and disc juggler gives me the application error "No Seek Complete". I am using an Acer 6x4x32 burner and am trying to use Maxell 700 MB CDRS. The first successful image burned was also on a Maxell 700MB CDR. I select CD image to recorder, select the source image file, go to advanced tab and select mode 1, select 2x or 4x burn speed and test then write if ok. However, as stated above, I never get to the burning stage because dj crashes out in the read buffer phase???? Interestingly, I tested the first cdi image I burned successfully (as though I were going to burn it again) and it still works fine (the read buffer doesn't crash out and dj moves into the burning phase)??????

Has anyone else had the same problem and, if so, is there a solution or am I doing something stupid?

Thanks