Its about this mod. The server does allow client-side asi mods and it works till the point where i should fly.
unpack it and rename "Nice Fly.asi" to "NiceFly.asi". Enable it with H and then run and jump.
The mod is supposed to let you jump very high and then starts flying. The jump works but then you just fall back to earth. I know that fiver doesnt like some mods but i would like to know why and how to make it work.
Thanks in advance,