I have some Eagle files (ver. 4.0.9, I think) that I'd like to be able to open (at least the schematics) in Eagle 6.4.0. When I try opening them, I get the following error:
"Eagle for Mac OS X can't update file '<filename'>
(data structure is older than version 4.11"
I don't have ver. 5 or other versions of Eagle that might be able to open these files.
I can't find any ULP's or other ways for converting them, and the Eagle manual, update file, and readme doesn't tell me how to convert them either.