I did use the MYM launcher, and it gets as far as a black screen with 1.7.x at the top... then crashes with this report. Let me guess... wrong java version? Thats the usual problem...
The reason for your crash is that you have a 1.6.4 version of mapwriter installed , if you remove that or replace it with the 1.7.10 version it should load
opse! Didnt even see that! thanks! retrying... its got much much further... Ta so very much. I'm at the main menu, so I assume it worked.
