Problem with llRequestPermissions()

[Poltergeist Azarov]

Hello, 

When I give some permissions to sitters on my vehicle by script2, this causes to lose permissions taken by script1. So when some sitter changes her/his position, I lose my camera control and so on. 

[Rolig Loon]

Hmmmm.. as the wiki says, "Permissions are requested and granted separately for each script, even if they are located in the same object." The only thing that occurs to me is that if both scripts have changed events that are monitoring CHANGED_LINK in the same linkset, then a person standing up will change the number of links in the vehicle and might confuse the script that's handling the other person.  That shouldn't happen if you are using llLinkSitTarget to keep the two avatars separate, but it's hard to tell without seeing the script.

[Poltergeist Azarov]

Theres no link change and script1 confuses after some permission change happens between passengers and driver on script2. This seemed to be a bug to me before aswell. I would like to paste whole script on here but I am sure you would have hard time to read it.

[Dora Gustafson]

It has fooled me more than once that the CHANGED_LINK event is triggered for all scripts in the object when someone sits or unsits anywhere on the object.
I need to handle the event very carefully and make sure the event is by the person sitting or unsitting on a particular prim.
My precautions sometimes include llAvatarOnLinkSitTarget as Rolig pointed out and sometimes include prim number in link-set
Note that llAvatarOnLinkSitTarget(0) will fail, so one prim objects represent a special case

:smileysurprised::smileyvery-happy: