I am trying to make this piece of code work
<Product Id .....
<Package Id......
<Property Id="TEST">
<RegistrySearch Id="TestString" Root="HKLM"
Key="SOFTWARE\Vendor\Product\" Name="Install Started" Type="raw" />
</Property>
<Condition Message="A version of this product is already installed.
Please uninstall [ProductName]
from Add-Remove Programs and reinstall."><![CDATA[TEST=""]]></Condition>
Now this works fine if I install, however, when I go to uninstall it
won't let me unless I remove the registry key. I think this is down to
the condition I am using.
This is what I am trying to get to so it shows what I have done.
Install as normal.
Reinstall, detect and give message please use add remove etc
Uninstall as normal
I have tried variuous flavours of TEST = <> "" etc I have Tried using
REINSTALL <> = "" etc and also using REMOVE <> = "ALL" etc, obviously
these have not been as written, and I think it may just be the
sequencing I am getting wrong.
Any thoughts would be helpful as I have now run out.
Joe
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