When I try load up my pack on the FTB client, it doesn't even attempt to load the game it just goes straight back to the launcher again.
At the bottom of the log it says something about CoFH Core but I'm not sure what it means.
Also, at the top it says it loads Forge version 1208 even though I'm not using 1208, I'm using 1230. I'm assuming this is why I'm getting problems.
Here's the log:
http://pastebin.com/9SL8zQ8S