I have a much earlier version of EAGLE so maybe there's a problem there- I've never had any problem with the .brd files. I've never used any other program. The place to go for boards is OSHpark- oshpark.com
I haven't used the Servo Board in quite some time. I've found that it takes up more space than I like in lot of my projects and I rarely use the charging feature as I often prefer to power everything from a single power source using a regulator to power the Pro Mini.