I recompiled the mod for 1.8. Sadly the Vessels are still not deployed correctly. It seems to be a problem with the part initialisation.
I wish i could find the problem, but my programming knowledge is too limited. This mod is absolutely essential for KSP, eventually someone else can find a solution.
If someone is interested, maybe the error and the coresponding function helps. https://pastebin.com/1iKg06XP