Bomberman 64 Black screen on World 1: Stage 4 -- Winged Guardian

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What steps will reproduce the problem?
1. Load Bomberman 64 (U) [!].z64
2. The whole game is black screened, but there's a trick here to clear that up. 
On the intro, wait until you see Bomberman on the Red Mountain stage, press 
start immediately. In other words, skip the intro when you see something after 
Bomberman have thrown the bomb.
3. Choose Adventure and then choose the first file (From my file).
4.Go to Green Garden on World Select.
5.Choose Stage 4. And you're there.

What is the expected output? What do you see instead?
When the dragon arrives, you'll see flashing screen. And then the screen is 
black when you're going to meet the boss.

What version of the product are you using? On which system and loader?
Wii64 Beta 1.1 "Honey", Wii System Menu 4.1, HBC 1.0.8

Please provide any additional information below.
I've uploaded my save. =)

Original issue reported on code.google.com by Metroid1...@gmail.com on 22 Aug 2010 at 9:22

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I wanted to play this game forever on the Wii64! I didn't know there's a trick 
for this game to be playable on the Adventure Mode at all. Thanks for that, 
really!

The bosses is what I likes the most of this game, so if the Winged Guardian 
boss is getting fixed, I would EXPLODE OF HAPINESS! Wii64 Team, at least try, 
or think about fixing this issue... I'm literally standing on my knees right 
now. It's one of my favourite game of all time. It's up to you Wii64 Team. And 
thanks for making this possible!

Original comment by dkomato...@hotmail.com on 30 Aug 2010 at 4:45

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Does anyone even care...?

Original comment by Metroid1...@gmail.com on 3 Oct 2010 at 6:40

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This emulator still has many bugs that need to be worked out, here's hoping 
these are resolved by the next release! XD

Original comment by nintendonerd1889@gmail.com on 7 Oct 2010 at 2:52

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Somehow I defeated the Winged Guardian "blindfolded", so now I'm in Black 
fortress =D

But on High-Tech Harvester, when it puts the large orb in the center, then the 
black screen returns D=

The game works flawless, it's just that on those two bosses (so far) the black 
screen keeps appearing.

I hope that emukidid accept this issue soon... or at least type if it's 
possible to fix. =)

Original comment by Metroid1...@gmail.com on 30 Oct 2010 at 8:03