Bad batch of cards, or reader/writer issue?

[rprosperi]

(08-06-2021 12:59 PM)Dave Britten Wrote:  Precisely how I've been doing it, as a matter of fact. Works great! I've got a Stat Pac I coming in the mail today, so we'll see how many of those cards I need to clean and rewrite.

Aha, so you're the guy that beat me to that... by only seconds... good reflexes.