This means part of the hp printer software was not deleted properly. (Windows detected something is missing and tried to repair the installation). You should be able to find it in the downloaded hp printer software. If not, try download and install the hp printer software.
Use the uninstaller to remove installed software/driver, to avoid issues like this.
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I have the same problem on an Asus laptop running Windows 7 Home Premium, 64 bit. It won't run on my family network and says I need a trayapp.msi - which I can't locate on Microsoft website or on my computer.