I dunno, either, but have not experienced a problem. I do know that the preferences are located in different folders. Rick ------------------ On 8/9/07 at 1:18 PM -0500, Linda wrote in a message entitled "Re: [X4U] Photoshop CS2 and CS3": >On 8/9/07 1:11 PM, Rick Gordon wrote: > >> Actually, on Macs, I have seen InDesign CS2 and CS3 running together many >> times with no apparent problem, > >The U2U forums claim that the preferences file and/or plist can become wonky >when being accessed by two versions of the app at the same time. I dunno if >truth or not, just passing along the info. -- ___________________________________________________ RICK GORDON EMERALD VALLEY GRAPHICS AND CONSULTING ___________________________________________________