BlankYou will be fine. Just make sure that your friend doesn't use any plug-ins that ship with Sonar 7. Other wise, you may get that error message about plug-ins not being available. Regards, Phil Muir P J Muir Productions, Music And Audio Production Telephone: US (615) 713-2021 UK+44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxx URL: www.philmuir.com/ ----- Original Message ----- From: Omar Binno To: ddots-l@xxxxxxxxxxxxx Sent: Monday, May 19, 2008 9:35 PM Subject: [ddots-l] downgrading sonar files Hello, If I'm using Sonar 6, and a person I'm colaborating with is using Sonar 7, will we both be able to work with a cwp file, even though he's using a higher version of Sonar than I am? Thanks. Omar Binno www.omarbinno.com