How to add client install package in SEPM 12.1

Hi,

I need to add cilent install package in SEPM 12.1, after exporting the file when I am trying to add install package an error " You cannot add this client install package becuase the package contain single .exe file. The sylink.xml file is missing or corrupted in this package."

Package I want in 12.1.4 32bit.

And do I need to upgrade SEPM to 12.1.4 or client install package is enough?