What I'd really like is a pointer to a working example of a Major Upgrade.
The fine tutorial at http://www.tramontana.co.hu/wix/ has a lot of info
about patches and minor upgrades, but no explicit working examples of major
upgrades. I've been trying for quite some time to get this working.
What I'm experiencing is this-
Either I get a double install, or a broken install. If I set OnlyDetect to
yes, I get a double install when I try to do an upgrade (two instances of my
program in add/remove programs) . If I set OnlyDetect to "no", at the end of
my upgrade, the entire installation is deleted and I have a corrupted
install.
Here's my Upgrade table-
<Upgrade Id="9C471B34-F15F-44EA-8F25-131B6952A0CA">
<UpgradeVersion OnlyDetect="no"
Property="PREVIOUSVERSIONINSTALLED" IncludeMinimum='yes' Minimum='0.0.1'/>
</Upgrade>
I don't see any suggestion of where the PREVIOUSVERSIONINSTALLED property
should be used once it's populated. Do I have to write a custom action, or
is there some mainstream way of using it? I tried adding it as a condition
to the Welcome Maintenance dialog, but that didn't seem to work.
Thanks for any help.
-Carter
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