I got you to the point where FlameDragoon1 was in the video. What he did in the video wasn't supposed to done, and I'm assuming that tile error was fixed so that would explain why you couldn't go down the path like he did. Anyways, what I did was get off of the Tauros, run through the tall grass, went upwards and went through the other patch of tall grass til I reached the tree you could slather honey onto it. I did that and waited for the Heracross and Pinsir to arrive, where I defeated the Heracross to get the Pinsir to crush a log that was blocking the pathway for you. Once I did that, I went off to find one of the red and white flowers to reset all of the Tauros and Bouffalant in the game so that I could take one down to where the Flame was in at 9:04
tl;dr I did it. Here's your save file.