Custom Modpack Mac issues

[Beefchicken]

Hello!

I have recently created a modpack and bought a server to play with some freinds. I use my windows computer to play. But my freinds uses their mac's. I have no lag or any problem, but my freinds does. When they try to start a singleplayer world it says "Shutting down Internal Server". Now when they try to join our server, it says that the have joined the game. It's lags alot when the gets into the server, and as soon as the make a move with the mouse or move. then the modpack crashes and they get's back to the launcher. I knwo it's no problem between the server and client. Now when dowloading for example the "Realm Of mianite" modpack before I start the game the pack has a foler called "_MACOSX" does this have anything to do with the crash?

[The_Doctors_Life]

I'm pretty sure the MACOS folder is there because the creator of the pack uses a MAC computer, and has nothing to do with the modpack. Please provide your modpack URL so we can help you further.

[Beefchicken]

Here's the modpack URL:

http://api.technicpack.net/modpack/beanpack-adventures

[plowmanplow]

The pack seems well constructed and appears to work fine. We would need one of the crash reports from a client that is crashing on world creation in order to proceed.

[Beefchicken]

No worries, everything is solved, I just deleted the technic folder and uninstalled java and reinsalled it again, then it worked!

Thanks anyway