Planet Minecraft

i just downloaded 1.2 and for some reason i cant convert one of my worlds to anvil, the screen just goes blank then an error message pops up and then it goes to black. If anyone knows a fix to it please help me >_<

[Exurbia]

Hmm... Maybe you haven't allocated enough memory for Minecraft.

Is it just me or do zombies not show when I spawn them using the spawn egg thingy?

It's irritating...

Hmm... Maybe you haven't allocated enough memory for Minecraft.

no its just that world, i have tried converting my other worlds and it works but its just the one world

Is it just me or do zombies not show when I spawn them using the spawn egg thingy?

It's irritating...

maybe you have peaceful mode on?

[Exurbia]

Hmm... Maybe you haven't allocated enough memory for Minecraft.

no its just that world, i have tried converting my other worlds and it works but its just the one world

No, you need to go into Java or something (I don't know how my dad did it) and give MC more memory on your hard drive. The worlds are probably too big for your computer to handle.

Is it just me or do zombies not show when I spawn them using the spawn egg thingy?

It's irritating...

maybe you have peaceful mode on?

Derp!

I did xD

Thanks

Hmm... Maybe you haven't allocated enough memory for Minecraft.

no its just that world, i have tried converting my other worlds and it works but its just the one world

No, you need to go into Java or something (I don't know how my dad did it) and give MC more memory on your hard drive. The worlds are probably too big for your computer to handle.

i really dont think it has anything to do with memory because my computer says it has loads of memory left

Ya im having the same problem, it seems to just be that ONE world. (of course its my favorite one) :I It just doesnt show up on the world menu though for me.

same problem!