In article <1242150015129-2870660.p...@n2.nabble.com>,
achandrapano <achan...@panologic.com> writes:
>
> But from the new msi you do have access to the REP action which should call
> the old msi's uninstaller. Why can't I put a rollback CA right before this?
See the documentation on RemoveExistingProducts. If you want the
sequence to be "remove old version first, then install new version",
REP must be the very first action in the install transaction. That
means you can't put a rollback action before it.
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