Using Wix 3.5, my initial MSI package (MyProduct v1.0) contained quite a
few features, e.g. MS Word 95/XP/2003/2007/2010, MS Excel
95/XP/2003/2007/2010, MS PowerPoint 95/XP/2003/2007/2010. Their feature
level was initially set to 0 but set to 1 if the specific app existed
(using AppSearch). In other words, if MS Office 2003 was installed, only
Word 2003, Excel 2003 and PowerPoint 2003 features had level=1, and the
rest remained as 0.
Recently I made the upgrade MSI package (MyProduct v2.0) using the same
approach people said, such as, in How to implement WiX installer
upgrade?http://stackoverflow.com/questions/114165/how-to-implement-wix-installer-upgrade
And I scheduled *RemoveExistingProducts After=InstallValidate* in *
InstallExecuteSequence*.
Here is a fatal flaw in my installer: suppose the user had MS Office 2003
when he installed MyProduct v1.0. Now he upgraded MS Office to Office 2007
(therefore Office 2003 no longer exists), before he upgrades MyProduct to
v2.0. My installer can't handle this. Why? I've tried to remove the old
features (e.g. Word 2003, etc.) using the type 1 custom action by calling
MsiSetFeatureState function. Although that function returned ERROR_SUCCESS,
their states didn't get set to ABSENT but remained as NULL (I know the
feature levels for Word 2003 etc. are 0 since they don't exist any more,
and I believe that's why feature state unchanged), and I gave up
eventually. (If you have any idea to make it work, please guide me to the
light!!!)
Anyway, my main question is not about the above bug. For now, I am more
concerned about unable to remove the existing product, v1.0:
Case1: upgrade without upgrading MS Office (works)
When I tested the upgrade without upgrading MS Office, the upgrade works,
and there is only one entry (MyProduct v2.0) in Add/Remove Program (aka
ARP): the upgrade removed the earlier product entry from ARP.
Case2: upgrade after upgrading MS Office (disaster)
However, if I upgrade Office from Office 2003 to Office 2007 and then
perform the MSI upgrade, not only Word 2003 feature / Word 2007 feature
were installed, but also there are two entries (MyProduct v1.0 and
MyProduct v2.0) in ARP. If I tried to uninstall v1.0 in ARP, it seemed to
uninstall it, but if I refresh ARP, v1.0 re-appears, so I couldn't even
uninstall v1.0.
I compared the log files generated for both cases but it didn't tell me
why. And I have no idea why. Can anyone help me?
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