Hi,

When we released the RTM of our product (our first experiment with Wix), we
included a launch condition to ensure the program wasn't already installed:



<Condition Message="An existing version of [ProductName] is already
installed.  Please go to Add/Remove Programs and remove it before installing
this version.">NOT Installed OR REMOVE</Condition>



I'm now in the process of creating our first patch, but unfortunately when I
uninstall the patch this message is being shown and the patch fails to
uninstall.  I am able to uninstall the full product which removes the patch
with it.



Can someone please explain what is going on here, and what if anything I can
do to resolve this?



I'm guessing that uninstalling the patch probably runs the original
installer under the hood to replace the patched files with their original
version, and in retrospect I probably should have conditioned it for "NOT
Installed OR REMOVE OR PATCH OR REINSTALL", or something to that effect.



The RTM was built with Wix 2.0.5325.0, and so the patch is being built with
the same version.



Thanks!
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