I think it's something on my end, but anyways, I'll give this a shot and ask.

Everything seems fine. I'm pressing the R trigger, and the pops menu appears, yadda yadda.

However, when I choose which pops to play, it gives me an 80010002 error?

I'm trying to play Brave Fencer Musashi, which needs a specific pops to be played in. It doesn't seem that I'm using a bad eboot, but I'm not sure. Do you know what the problem could be? This error happened with all the available drivers I tried in, including m33 driver.

One more thing...is it normal that installing this popsloader has somehow turned my 6.60 PRO-B9 into 6.60 ME 1.6?