Il problema è derivante dal Calendar control MSCal.ocx.
Di seguito la spiegazione e soluzione funzionante di ciò che ho trovato in rete.

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CAUSE
This problem occurs when distributing the Microsoft
Calendar control (MSCal.ocx). The "Register=" line in
the dependency file (MSCal.dep) is incorrectly set to
$(DLLSelfRegisterEx).
RESOLUTION
To fix the problem, do the following:
Open the Setup.lst file in a text editor, such as
Notepad. Setup.lst is one of the files created for
your application setup by the Setup Wizard or PDW.

Find $(DLLSelfRegisterEx). You should see
$(DLLSelfRegisterEx) highlighted in the entry for
MSCal.ocx.

Change $(DLLSelfRegisterEx) to $(DLLSelfRegister).

Save your changes and close Notepad.

Run the application Setup.exe.

To fix the problem for all setup.exes created with the
Setup Wizard and PDW, follow these steps:

Open the MSCal.dep file in a text editor, such as
Notepad. You should find MSCal.dep in the same folder
as MSCal.ocx, which is normally located in the
Windows\System folder on Windows 95/98 and the
Winnt\System32 folder on Windows NT.

Find $(DLLSelfRegisterEx). You should see
$(DLLSelfRegisterEx) highlighted in the entry for
"Register=".

Change $(DLLSelfRegisterEx) to $(DLLSelfRegister).

Save your changes and close Notepad.

Run the Setup Wizard or PDW to create a new setup.
NOTE: Do not use an existing template in the Setup
Wizard or an existing packaging script in the PDW.
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Ciao