Comment 8 for bug 272211

I've submitted a branch which falls back to Installer.app on 10.4

(seems like I lost a previous comment/email)

The Sparkle test app downloads an app package and not an installer, so I couldn't test the current code, nor the proposed patch.

However, running the following command on 10.4
   open -W -n -b com.apple.TextEdit ~/Library/Preferences/Preview.plist
fails with:
  2009-01-06 23:00:57.971 open[5855] No such file: /Users/ks/-W

So the 'open' command can be ruled out for 10.4 when the execution flow has to be blocked while installing.