I thought, that when I clicked play The game would load and I would be able to play.
However, the mojang logo came up in the correct resource pack (sphax) but immediately after I was back at the launcher with an error message.
IN MINECRAFT 1.6.2
Steps to Reproduce:
1.Open Minecraft from Desktop
2. Choose play on the launcher
3. Watch it crash!
Based on a crash report provided in this issue, I believe with high certainty that this report may be a duplicate of MC-25420. You can view all information known about this specific crash at MCX-911.