That's got it ... tonight's build did fix the problem, which is a relief and another validation of the nightly build concept.
Thanks very much, Kyle, that was a tough nut to crack.
FYI, CB Subs 3.0 formats "04-01" as "April 1", which my group would prefer. This change to CB Subs 4.0 makes it "1 April". Our display settings are the same for both versions of CB Subs.
But that's no big deal. We're happy, and again, thanks!