Tekkit 3.1.3

[XtremeOwnage16]

So I tried launching the newest/latest version of Tekkit Classic and I get an error code and then I can't play it DX. I am fine with 3.1.2 but my resourcepack works specially for 3.1.3 (Sphax with the addon for Tekkit) Can someone tell me why 3.1.3 crashes and how I can get on it?

[planetguy]

3.1.3 isn't fully stable, IIRC. I doubt there's any change in 3.1.3 that would make it incompatible with resource packs for 3.1.2.