It shouldn't break anything, but if it does you can always post a crashlog and we can help you figure out why it doesn't work. Just make sure if you add RotaryCraft to add DragonAPI
Okay thank you very much, i just thought the "number tags" on each item could make problems if two (or more) mods choose to use same numbers for a item they created.
So basicly i can add any mods i find desirefull then ? or should i still be aware of something specific ?