- What OS are you running?
Windows 7 64bit - Are you using minecraft hosting provider or a dedicated/local server not designed for minecraft?
In house server - What version of FTB are you using? (Dont just say latest tell us the version)
FTB Unleashed 1.1.2 with every mod enabled - Did you add any mods to the server pack?
Millenaire - What are your server specs?
8gb of ram, 3.1ghz quad core processor, 250gb HD - A good detailed paragraph about the problem
I've modified the block id's of Millenaire so it loads in single player without any errors. I changed the same block id's in the server folders of Millenaire and it starts without any problems. When I connect to the world I am disconnected with the error "Internal exception: java.io.IEOxception: Bad packet id 117" This does not happen when I remove Millenaire from the mod pack and load into the same world. I have enabled all mods in the FTB Unleashed modpack including those that are normally disabled by default.
I hope this is enough information to bring forth a solution. If not, then I will try to retrieve any that you're after.