Found Mod select answer here
http://forums.technicpack.net/index.php/topic,4191.0.html
The mod select button doesn't work.
Your computer might not have any program designated to open config files. Go to your .techniclauncher and find
the "Config" folder in any of the mod folders you have already installed. (They will be empty if you haven't yet.)
Right click a file ending in .cfg, select "open with..." and set Notepad (Windows) or TextEdit (Mac) as the default
program that opens it. Your mod select button should now work as long as you have a pack selected in the drop
down.
