Thank you for your reply.
I know why I had these problem.
My 2 CA are VBS script.
I wanted to exit my CA with an error code if I didn't find a specfic file.
But in my script, i wrote : On Error Resume Next.
I suppress this line and my script works successfully, but I always don't know how to do a Wscript.Quit in my VBS, because i always have an error in my msi package when i insert this code (Wscript.quit) in my CA.
I have the following error message: Wcript object unknown ...
Do you have an idea how to replace Wscript.Quit by a valid code and how to replace Wscript.Arguments(x) by a valid code too?
Thanks for reply.