Cannot rig my model

Hello all as the tiltle says i cannot rig my model even when i have it on rigfy which i have no luck on riggin it. Problem u may ask is that the model would not rig any bones no matter how many times i made the mesh as the parent. I am not sure if its the models fault or source engine’s bones fault because it worked the last time i rigged this model but now it seems that it isnt rigging on blender.

See as u can see i am rigging the model with the automatic weights

It is still not able to make to bones with the mesh even though it was rigged

If you are using Rigify you have not enabled scripts to autorun in the user preferences. See the message at the top of the interface.

If you want specific help then not supplying any model for people to look at is not the best way of going about it.