My minecraft is showing these errors what should i do?

This sounds like some mod is trying to use an openmod function that doesn't exist. This could be caused by some other mod using an openmods function that has changed in a version. Or it could mean you have a mod that requires openmod and you didn't install it. Or it could be a bug in Openmod.

In other words, not enough information to go on without the full crash report. But this is really not the place to try to resolve minecraft crash reports.

I would suggest you try the OpenMods irc (Internet Relay Chat). #OpenMods on irc.esper.net

You'll need an irc client such as mIRC (Windows), Konversation (linux), or whatever mac uses.