Think this is the correct place to post this crashlog :P

Using Forge 1816 for minecraft 1.9 also using mantle 1.9-0.9.3a.jar

Crashlog:
http://puu.sh/o3OHK/375d7f5b5d.txt

I have fixed this in the dev builds, but @bonii-xx is needed to make a new release of mantle on curse.

Okey then ^^, Thanks for the quick response :)

Don't use anything after 1817 for now. No mod that's setup properly will work without update.

so alexbegt can you add a link for a dev build?

This should be fixed now If you download "Mantle-1.9-0.9.4.jar" and if you use Tinkers Construct, download "TConstruct-1.9-2.2.2.jar".