Maybe it was because I wasn't using a fully updated version when I replaced the files that fixed the error. If you haven't restarted you could try replacing with an old demo and then going back to the newest?
Sorry. Already restarted.
EDIT: Just out of curiosity, what Digimon has everyone figured out how to get? Out of the ones available in the beta, I've figured out how to get all of them except for the following: Icemon, Vilemon, RedVegiemon, SandYanmamon, Snimon, Flarerizamon, Seasarmon, MudFrigimon, Roachmon, Saberdramon, and Centarumon. I'm assuming the Gatomon line isn't truly available, just something you see used by the female PC if you play the male PC. So I've got most of the stuff. And I've got a suspicion for RedVegiemon. The DMA says strong Vegiemon can eventually turn into RedVegiemon. So that sounds like Digivolution, but oddly staying at Champion level. A Slide Evolution. So maybe it's a friendship evo. Roachmon is supposed to be unhappiness evo, but I've never seen them work. My guess is that since happiness rises when you gain a level, the current programming is for minimum happiness. Which really only works if you're in a battle with multiple Digimon and knock it out and revive it after gaining a level. Plus just walking adds to happiness. Looks the Nume Poop makes everything Numemon, not Roachmon or Vegiemon. I seem to recall an earlier hint that unhappiness could yield any of those 3, depending on the exact Rookie.
And my current team:
- Izzie, level 25 Kyubimon. Serious, very finnicky
- Benedict, level 25 MoriShellmon. Careful, strong willed
- Demi, level 25 Bakemon. Naive, quick tempered
- Innsmouth, level 25 Tuskmon. Lax, highly curious. Intimidate ability
- Mascot, level 25 Grizzmon. Jolly, quick to flee
- Seismos, level 25 Monochromon. Timid, hates to lose