Launcher wont let me add new mod packs or view settings

[th3griff]

Ok, so the launcher loads up fine and I can select and play any of the predefined mod packs just fine. However whenever I go to add a new mod pack the launcher locks up and I have to task manager the thing to close it. The same thing happens when I choose to select the options menu but not any of the web links (Steam, forums, etc.).

 

Any help would be much appreciated, thank you!