Are you using the same component GUID for each of these keys?  You can't 
do that...  It's breaking the component rules and all kinds of bad things 
happen when you break the component rules.

Each distinct component keypath (the 'main' entry in a component) MUST 
have a unique component GUID.  Each distinct component GUID can only be 
installed in one place on a given machine (you can't try to install the 
same GUID to two different keypaths).

Kelly




Uma Harano <uhar...@esri.com> 

12/07/2009 02:47 PM
Please respond to
"General discussion for Windows Installer XML toolset." 
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Subject
[WiX-users] Instance transforms with the msi






Hi,
I am using instance transforms (msts) to install multiple instances of my 
base product (msi) on the same machine.

Everything works except for one issue:
I use an instance identifier property [INSTANCEPROP] that gets set 
to"Instance1", "Instance 2",...etc for each instance. I use this property 
to write registry keys for each instance. For example - 
HKLM\Software\ESRI\[INSTANCEPROP] is written via the registry table (One 
record in the registry table to linked to one component). When multiple 
instances are installed, this key could be repeated multiple times, but 
they would all be in their own hive
HKLM\Software\ESRI\ Instance1
HKLM\Software\ESRI\ Instance2
HKLM\Software\ESRI\ Instance3
Etc

Scenario:
The base setup and an instance 1 is installed, I uninstall the instance 1. 
I find that HKLM\Software\ESRI\Instance1 is still left behind on the 
machine after instance 1 is uninstalled.  Is this because the component 
that includes this registry key is still in the installed state with the 
base setup?
What would be the best way to ensure that the HKLM\Software\ESRI\Instance1 
get removed when instance 1 is uninstalled? Should I make multiple 
components in the msi each with unique conditions for each transform? Or 
create a custom action that deletes the registry entry for each transform?

Thanks!
Uma Harano

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