Hello, we are using the 1.6.4 version of Mekanism on a server (we are refraining from updating until all of our mods move to 1.7), and are experiencing a server crash related to mekanism's fluid system. I realize that you have stopped work on 1.6.4, thus why we (Myself and the server owner) are willing to use the available source code/API to fix this if we can be shown how it can be done. Here is a link to our server's crash report: http://pastebin.com/f8dXR1iW

Thank you for your time, I hope to hear how we can fix this as soon as possible.

Closing, as this is relating to a now non-supported version. All that is required to fix this is to add a null check to where the crash happens - I have no problem with you recompiling another version of Mekanism.

Thank you very much! Glad to know how we can fix it.