Hi Friedrich,
Stand down. EV hardware code-signing is presently working here. The problem was actually with the time-stamping. SignTool seems not to be waiting long enough for the time-server. Fortunately we can live without time-stamps for now because our EV certificate still has a good 2 years left on the clock.
Thank you very much for your support and for all of your good work on SeupBuilder.
Colin Humphries