My friend recently made a server on the modpack: Pixelmon Reforged. The server was pretty laggy, and I was having some problems rejoining, so I decided to go to task manager and force it to close, but after doing that, the modpack decided not to cooperate, and now it won't open at all. Other modpacks will open, sure, but when I click "play" on the modpack, it loads very quickly and then nothing happens. I can click play again, same thing. I tried deleting the pack and installing it again. Same thing. Please help?