ShootThroughWalls

Hello Mpghians,
i was trying to get working STW without Client_Error 18_0.
Then i was playing CF With STW like 5 Hours and 0% Errors with this information i get:
Went u shot more than 4 Bullets on a wall u get Client Error 18_0
there are 2 types of walls
Shotable: (Box,WoodDors,SomeFloors,Etc)
&& Unshotables: (Normal Walls,Metals Doors(Alaska E.M One),Etc)
when u shot on a Unshatables more than 4 bullets the server calls Client Error
When u shot 4 unshotable walls the server calls Client Errors.

Thats all the information i get,i think we can make it works again.
Maps Without Errors:
Egypt TDM: All are ShotAbles.
RoofTops: I Thinks is all ShotAbles like Egypt TDM.

Regards,