Forge 1.7.2 not launching

[drjflash]

I installed forge for minecraft 1.7.2 but every time i click play on the minecraft launcher it loads and opens the launcher again. It never actually launches minecraft but it keeps taking me back to the launcher every time i click play. I have tried re-installing it already.

[Chance9025]

Posting the Forge log and any crash reports from the incident might help.

[drjflash]

Where would i find the forge log?

[LeMonBLOCK]

in the .minecraft folder

[onContentStop]

I am experiencing this exact problem, here is a log:

http://pastebin.com/RWs7k69D

[LexManos]

Caused by: java.lang.ClassNotFoundException: argo.jdom.JsonNode

Argo isnt used in 1.7, you have a old mod installed, Namely chickenbone's mods.

[onContentStop]

Caused by: java.lang.ClassNotFoundException: argo.jdom.JsonNode

Argo isnt used in 1.7, you have a old mod installed, Namely chickenbone's mods.

Of course. My mods folder had a few mods from a while back, and they were the cause of the problem.

[drjflash]

Caused by: java.lang.ClassNotFoundException: argo.jdom.JsonNode

Argo isnt used in 1.7, you have a old mod installed, Namely chickenbone's mods.

Of course. My mods folder had a few mods from a while back, and they were the cause of the problem.

 

This fixed my problem as well. Thank you all