Dakeen

Fun how one little number difference can mess it all up.Cool the problem is fixed.Glad I cold help.

Try "holy"seed (without quotes) with large biomes, fly up and straight ahead, starts going bad quickly. http://i1298.photobucket.com/albums/ag44/JDOG74048/2012-11-25_175948.png Photo of whats is happening, notice floating leaves, they are attached to invisible trees that start on the inside of those chunks. Windows 7 Phenom II x4 3.2ghz 12g ram Radeon HD 6700 As for a copy of my minecraft folder ummmm got an email I can send it too?!

That's what I was just saying I was using 6.4.0.395 but once I put in my first post I deleted my entire minecraft folder and started from scratch using the recommended version of Forge. To get this log I once again deleted my minecraft folder and inserted 6.4.0.395 into a brand new minecraft.jar, no other mods added, loaded a new world and still have bad chunks.

Hope that helps, I don't see anything in there that looks odd myself. I discovered there are invisible trees inside these bad snowless chunks. Also snow will not accumulate in those chunks. This is a fresh install of Minecraft, exited, then added forge ran it again started a new world found me some snow and poof bad chunks.

It doesn't crash, not sure where to find such a log.

Using Forge 1.4.5-6.4.0.395 after cruising along in a snow biome chunks begin to load with out snow or ice cover in a checkerboard fashion, some times (Perhaps always?) if you continue in same direction chunks stop loading correctly all together (no bedrock just void, which you *can* fall off) then loaded chunks begin to disappear(despawn?)! I first had a few mods installed so I tried taking them off one by one to see if they were the problem, in the end I deleted my entire Minecraft folder and started with a Vanilla Minecraft, generated a few worlds and checked out the snow biomes, no issues. Then installed ONLY forge loaded a few worlds and again had bad snow chunks. Unfortunately I can't really tell if it is only snow biomes because there are no visual cues in other biomes.