as soon as i connect an acceleration pipe with any colored pipe the game crashes. with white pipes or only acceleration pipes and extraction and insertation pipes it works as expected. (this happens in singleplayer, i didnt try this in multiplayer)

Dupe of #32. Working on fixing it now

same here. :)
client log: http://pastebin.com/raw.php?i=PYxvtSL4

Need a copy of the crash log. Please use pastebin