launcher not working

[nubsmasher]

hello,
i'm having trouble with the FTB launcher i updated it today and when i did i couldn't play the game anymore
when i start the laucher it works fine i can install a map and change the modpacks but when i press launch it just stops everything and shuts down the aplication does anyone know how to repair this because i really like this modpack and want to play the map till the finish

 

[Meldiron]

Most likely because you've increased the max memory to over 1gb in the launcher options.

 

[nubsmasher]

thnx i lowered it and it worked