Try please this.
Msiexec /i AcroPro.msi IW_DEFAULT_VERB=Read TRANSFORMS=Acropro.mst /qb
This should work.
That has done the trick, thanks! I found yesterday I could also use LEAVE_PDFOWNERSHIP=YES on the command line to achieve the result, however we wanted to add to the Property table of the MST. In the case of LEAVE_PDFOWNERSHIP=YES this did not seem to work, but with IW_DEFAULT_VERB=Read it is working well.