Sergey was relating installation of MSCAL to an InstallShield setup. It seems you are manually installing the runtime.

>I already copy the MSCAL.OCX over to the client machine and registered it with the following command but it didn't help.
>
>regsvr32 mscal.ocx
>
>
>
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>Hi David,
>
>See Re: How do I get MSCAL.OCX to Install with Setup Package? Message #865778