[BlackM]

I would really doubt that you are using more than 16 filterscripts for your server :P , but check if thats the case cause samp limits the amount of filterscripts to 16, I actually dont know if it returns an error when you exceed that limit or it will simply exclude the extra filterscripts. In the case that this is not the issue(99% it is not lol), as Digital-Angle said, you can try Debugging, though b4 that, try to make ur filterscript as local as possible (i.e doesnt use remote functions). Then debug, first check if the filterscript recognises pressing "LMB", then check if the object gets created, etc.. some times weird things like the object being created and then destroyed instantly may happen for some reason :P, Good Luck