Board Thread:Bug Reports/@comment-25684944-20150210152004/@comment-25973561-20150213175104

It is a mod pack platform where you can download free modpacks and directly play with them. And since youare using technic it is probably the mod pack i had a similar problem just more sever if this is technic....

1. Add more RAM to it there is a option to do this in the top rightcorner in the options menu simply put itat max

2. restart the modpack this is located in the modpack options area

3. redownload it

4 there is one more option although i dont think it would be yours, you could go into the folders and look if there is a corrupt file in the section for the map if so then rename it.