FAQ.How to launch an app using it's creator code?
Feedback.

Answer: Send an AppleEvent "oapp" with the creator code to the Finder ("MACS"):
Example:

Dim a as AppleEvent
dim creator as string

creator = "MSIE"  ' here the Internet Explorer

a = NewAppleEvent("aevt", "odoc", "MACS")
a.Timeout = -1

a.ObjectSpecifierParam("----") = GetUniqueIDObjectDescriptor("appf", nil, creator)

if not a.send then
  msgBox "An error has occured"
else
  
end if