Hacking WiiScrubber - Cannot parse text correctly

[LeonardoGolden]

I tried extracting the .brstm files in Kirby's Epic Yarn.

Everything was working fine, until I got to "Demo_continent_connected_BGM.brstm" and 2 other files that were named the same, except the BGM wasn't there.

When I tried to extract it, it didn't do anything, and it showed "Cannot parse text correctly" in the little log box below the file window.
Am I doing something wrong?

I tried playing around with the settings, but I had no luck.
How can I extract these files?
Is there any other way?

Hope someone can help.
Thanks!