http://pastebin.com/6xYKz3Wi

How do I reproduce this? Its it in 1.7?

yeah 1.7
I've just found this in the log, no idea how it happened since I got remove errored TEs on

https://github.com/TechReborn/TechReborn/blob/master/src/main/java/techreborn/tiles/TileDieselGenerator.java#L149