Pixelmon mod won't load

Hi,

Just a quick question... I followed a tutorial from youtube even used filezilla to FTP pixelmon as it was too large to just import into the files... now the pixelmon works for me client side.. but it doesn't work on the server.. does anyone know why? Do you need more information?

Please let me know

Some extra info

- When picking a bucket from for example biomes o' plenty mod it crashes met out of the server.

- All mods are in file browser but not in manage mods?

I'm clueless please help