I have this scenario in my upgrade install

<Custom Action="ExportRegistry" Before="InstallInitialize"/> (ExportRegistry
is an immediate CA)

<RemoveExistingProducts After="InstallInitialize"/>

<Custom Action="ModifyRegistry" After="InstallFiles" />
<Custom Action="ImportRegistry" Before="InstallFinalize"/>

The upgrade works as expected in this scenario except that it shows the UAC
dialog on vista for ExportRegistry when it tries to launch windows
regedit.exe. 
So to get rid of the UAC dialog I have elevated the ExportRegistry CA by
making it deferred and non-impersonate and sequenced as follows:

<Custom Action="ExportRegistry" Before="InstallInitialize"/>
<RemoveExistingProducts After="ExportRegistry"/>

But the installation fails at the RemoveExistingProducts action. 
Any ideas??


-----
Andy
MSI Developer
Schneider Electric:working:
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