I am trying to upgrade a service and am getting the following error. "Could not find file 'C:\Program Files\ . . .\MyService.InstallState.'". The custom action is in C#. Any help would be greatly appreciated.

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TFS Build Engineer

One of the reasons you get this is when you haven't added the service installer class custom actions to *all* the custom action nodes: Install, Uninstall. Commit, Rollback.

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Phil Wilson

The custom action is applied to all nodes.

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TFS Build Engineer

It's an upgrade - I should clarify that it might be the old install that is looking for this, so the question is whether the custom action was applied to all nodes in the original install. The upgradeincludes an uninstall of the old product, and that may be looking for the installstate file.

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Phil Wilson

Yes, the old installer was applied to all nodes in the original install and always has.

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TFS Build Engineer