I think ProSeries started issuing that warning in error last year.  I just ignored it, I give my folks vouchers to mail.  There is a website at tax.virginia.gov where you can set up an account and pay online if you have to (I do this personally, but would not inflict it upon clients!)  When I looked it up last year I found the same info Lisa did (which did not apply to any of my clients that PS was complaining about.)

Rick (in VA)