Board Thread:Questions and Answers/@comment-5960446-20130106215849/@comment-128.208.36.196-20130107194624

I may have said this already (albeit from a different computer), but I can't remember for sure.

1.  latest development build, or latest STABLE build? they are not necessarily the same.

2.  some blocks can crash worlds all on their own. (blachole chest much?). Others (quarries+teleport pipes) can crash the world when placed too close together.

3.  Are you sure your computer actually HAS the ram to allocate? I can manage with less than 1 GB in tekkit, though I tend to use tiny render to keep the ram usage as low as possible. If your computer doesn't actually have the ram you try to allocate, you could be running out of actual ram.

4. Try getting rid of the texture pack? I'm not sure what happens if a texture pack is missing a block...