Well I manged to solve this yesterday, but I had to set biab back to factory settings to do so, I did a simple four bar intro and four bar song, rendered it and it started after two bars (ie two bars early), so after pulling much hair out, I went into options and took the entry to set settings back to factory setup, after reseting up the midi device I loaded up the song I was having issues with, didnt change any settings on the render screen, and rended out to wav files and it worked perfectly.

Not sure what settings were changed or if there was some other issue but the reset certainly seems to have solved it.

Thanks for all your replies and suggestions, you seem a really good bunch of people its nice to get constructive replies rather than the some time typical responses to new forum members (read the manual etc etc)

Cheers

Adrian