I have an installer that needs to completely remove the previous version and
install in the same directory. The two versions have only a handful of
files in common and all of these files need to be upgraded. The new
installer will completely uninstall the old product with no problems however
none of the files the two installers have in common are installed. The
pertinent xml is below, what do I have to do to get the common files from
newer installation copied to the installation directory? Do I have to have
the component and/or file Ids or Guids match from one installer to the next?
Note : For the 'RemoveExistingProducts' element I have also tried setting
the 'After' attribute to 'InstallValidate' with the same results.
Any help would be greatly appreciated.
<Upgrade Id="!(loc.Property_UpgradeCode)">
<UpgradeVersion Minimum="8.0.0"
IncludeMinimum="no"
OnlyDetect="yes"
Language="1033"
Property="NEWPRODUCTFOUND" />
<UpgradeVersion Minimum="1.1.2"
IncludeMinimum="yes"
Maximum="8.0.0"
IncludeMaximum="no"
Language="1033"
Property="UPGRADEFOUND" />
</Upgrade>
<CustomAction Id="PreventDowngrading" Error="Newer version already
installed." />
<InstallExecuteSequence>
<Custom Action="PreventDowngrading"
After="FindRelatedProducts">NEWPRODUCTFOUND</Custom>
<RemoveExistingProducts After="InstallFinalize" />
</InstallExecuteSequence>
<InstallUISequence>
<Custom Action="PreventDowngrading"
After="FindRelatedProducts">NEWPRODUCTFOUND</Custom>
</InstallUISequence>
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