Minecraft Forums

I recently updated minecraft to 1.7.10 and at first i would click play and it would close the launcher and not even explain why or anything. tha i downloaded the latenst versions of optifine and too many items. it now opens an app window but in the bottom left corner of the screen is a small video of trees in minecraft. like the background of the main menu. but the rest of the window is blank. what do i do to fix it?!?!