There is a postflight buried in the growl installer (I just dug it out) whose main purpose is to open the prefpane. You are seeing that in action. This would probably be worth to mention to the growl people that they should try and detect then the installation volume is not the same as the boot volume. This would actually be rather simple:

[code]
if [ “$3” == “/” ]; then
do your stuff
fi
[/code]

I am going to post it to their google group right now.

In the meantime, it probably shouldn’t be too hard to hack out their post-install script?

Just in case anyone is struggling with this still – Growl is now a flat package, so not as straightforward to edit. Here’s how to expand it, edit it and put it all back together again:

Download the Growl package and then in the Terminal:

[code]pkgutil –expand Growl.pkg Growl[/code]

Next, edit Growl/growl.pkg/Scripts/postflight and change it to the following (add the first and last lines)

[b]if [ “$3” = “/” ]; then[/b]
# Open GHA first so that, hopefully, Growl will already be running when the user lands in the prefpane.
“${PACKAGE_RESOURCES_DIR}/OpenAppWithoutAddingToRecents” “${INSTALL_DESTINATION_DIR}/Growl.prefPane/Contents/Resources/GrowlHelperApp.app”
“${PACKAGE_RESOURCES_DIR}/OpenGrowlPrefPane”
[b]fi[/b]

Finally, put it all back together again

[code]pkgutil –flatten Growl Growl121.pkg[/code]