Quote Originally Posted by linder View Post
You can use the built-in script functions to see if the correct folder does exist. For example, "If File/Folder..." or check if the DLL has the correct and expected version number ("Get File Info..."), etc.
Thanks for your suggestion. The following seems to do what I want:

! Edit '3' to match the ID of your 'Select Install Folder' dialog
If %_SB_DIALOGID% Equals "3" Then
If %_SB_INSTALLDIR% File or Folder doesn't exist Then
Display Message Box "Please browse to find the XXX folder" -- "Installation Folder"
Cycle Loop
End
End