Hi there,
Latest William's binary (6.4.1) is working in Lion. In an upgraded machine there is no major problems to run it both with tcltk and wxpython. In a fresh installation, I got problems to point to the correct GISBASE directory, the terminal ended in the text gui and once I pointed to where grass data was, it starts with the following warnings:
CFURLCreateWithString was passed this invalid URL string: '/System/Library/CoreServices/CommonCocoaPanels.bundle' (a file system path instead of an URL string). The URL created will not work with most file URL functions. CFURLCreateWithFileSystemPath or CFURLCreateWithFileSystemPathRelativeToBase should be used instead.
wish warning:
Wish[3284] <Error>: kCGErrorInvalidConnection: CGSGetWindowTags: Invalid connection
Aug 1 19:04:51 vpn1-22.vpn.uv.es Wish[3284] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.