Nope. Generally, files created in newer versions of any program you can name, won't be readable by earlier versions of that same software. That's just the way it goes. -----Original Message----- From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Henrik Leander Sent: Monday, October 08, 2007 1:48 AM To: ddots-l@xxxxxxxxxxxxx Subject: [ddots-l] CWB compatibility Hi. Is it possible to export a cwb file from Sonar 6 and import it in Sonar 4? I tried with a cwb file with only pure audio tracks without any effects and a drumtrack where cakewalk tts1 was used, wich should be the same synth in sonar 4 as far as I know. When I try to load it in sonar 4, some error message comes up telling that things can sound different because the file is saved in a newer version and there's an ok button. But the project doesn't open at all when ok is pressed. Is there any settings I can change for the saving or loading that would help? Cheers /Henrik