Exact same deal.
I'm only a week into modding minecraft and I got this same bug, regardless of where I place a pipe or what type of pipe I try to place, the world I create always crashes and gets stuck on saving chunks. I disabled EE to no avail
My worlds (including the original when I have all my work) are permanently stuck on saving chunks. I'm about ready to give up on minecraft, I really wanted to use pipes! Any ideas on how to fix it?
Edit: Clarified, all pipes, anywhere in SSP.