Could someone help me?

no idea whats wrong keep geting this crash-report

-- Head --
Stacktrace:
at java.lang.String.substring(Unknown Source)
at net.ph.a(ph.java)
at net.fb.a(fb.java)
at net.minecraft.client.v.d(v.java)
Also this is plain minecraft

 

it would help them if you pasted the whole thing to pastebin and posted the link here

 

nvm found it