We have a MSI that has a custom MST. In this custom MST we call a EXT via custom action. Everything install fine. But, when we go into Add/remove programs and try to uninstall this package it fails.

What code do you put into your .MST to avoid this? I recall seeing some code by others that gets "wrapped" around the custom action.
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add a condition to your custom action - NOT REMOVE~="ALL"
Answered 10/19/2009 by: timmsie
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where did you sequence the CA. is deferred or immediate etc
Answered 10/20/2009 by: cygan
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Answer this question or Comment on this question for clarity