Gamepad not working in FFXIFollow

Here's the situation. I have a PS2 gamepad that I'm connecting to my computer through a USB adapter (a SmartJoy PLUS, to be specific). It works perfectly. Windows recognizes it, every other game I've used it with works fine, and I know that FFXI works with it, too, because when I last played FFXI several years ago, I used it all the time. I just recently decided to reinstall and reactivate FFXI, however, and now it's not recognizing my gamepad. I can set it up in the FFXI Config utility and the tester there works fine; I can also set PlayOnline to use it, and it works fine there, too. When I actually go into FFXI, however, it doesn't respond to the gamepad at all, but the game seems to otherwise function perfectly.

Here's the weird thing: it worked once. While I was messing around with settings trying to get it to work, there was one time that I start FFXI and it worked perfectly, so I thought I had fixed it. I played the game for a while and then quit, but the next time I started the game, it stopped working, and it hasn't worked again since then.

So.. any ideas?