I would like to suggest that rather than give the warning about incompatibilities between 1.2 and 1.3 .sla files when a file is loaded with v1.3, that the time to warn should be when one is getting ready to save using v1.3...
Once you know about this issue, it's annoying to get the warning every single time you load a file. It seems to even come up when I load a file that I saved with v1.3 Greg
