Ubuntu12 - Fix Tekkit stuck at grey screen when logging in

Preface

This tutorial assumes that you used my previous tutorial on how to set up the latest/greatest version of java for ubuntu

You need to link your current java libaries as they don't appear to be downloaded by the launcher. Open your terminal and type the following lines to launch the application without problems.
For those running 32 bit systems:

export LD_LIBRARY_PATH="/usr/lib/jvm/java-7-oracle/jre/lib/i386"
java -jar technic-launcher-latest.jar

For those running 64 bit systems:

export LD_LIBRARY_PATH="/usr/lib/jvm/java-7-oracle/jre/lib/amd64"
java -jar technic-launcher-latest.jar

That was it, easier than Pi! I suggest putting those two lines in a file (with no extension) and running chmod +x on that file to make it executeable. From now on to run the application, all you have to do is double click that file and press the run button.