Pleas add just 1 line of code to the ForgeHooksClient class in the Method    afterRenderPass(int pass)

 

change:

 

if (handler == null)

            {

                tess.draw();

            }

 

to

 

if (handler == null)

            {

            if(tess.isDrawing)

                tess.draw();

            }

 

this would some rendering errors i got, and i saw on google, that many other people also have the same Problem, and if you look over the code,

doing that changes nothing

 

1) That code is beeing deleted in 1.5 so, no

2) What error does this fix exactly?

It was an GL11 error, but now its perfectly working, im not sure what caused the error, but I changed the code back and it works, so its unnessesary