Stargate Puddle jumper invisibility effect.

well i just found a problem when i reinstalled gmod, seems that all the invisibility effects dont work for me, the puddle jumper cloak effect just shows the jumper turnining bright white then goes into its standard phase look, however other things that use this effect either just give me a black texture or it just goes white, what am i missing to fix this?

i have the same problem

we need help with this bad