Animal Crossing: Wild World Questions

I recently installed Animal Map Editor 1.8 and first made a code to change the river arrangement in my town, which worked fine. Then I removed EVERYTHING (buildings, flowers, trees, etc) and replaced everything where I wanted it. However I did not add these new buildings in 'core river edit', I placed them using 'Advanced World Edit', so that little boxes were ticked.
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<BR>I made the code for that too, then started up my game, and on the titles bit I pressed the key sequence. It crashed, and I loaded it again, and this time it just stayed black after it went 'Nintendo'. It keeps doing it now, even out of my Action Replay.
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<BR>I think the problem is that I no longer have a house on it, I just placed a random mansion. What I would like to know is:
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<BR>1) How can I restore the game? I don't mind about having to restart my town, I just want the game to work. Is there a code I can use? Because I've tried a few and none have worked.
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<BR>2) How can I place my house and other buildings where I want? Because I think I'm meant to place them on 'core river edit' but when I do I can't put my house right by the sea, where I want it.
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<BR>Extra info:
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<BR>I have a DSi. I have an Action Replay DSi which I think is EU (U codes work on it, anyway).
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<BR>If you want to know anything else to help answer my question, fire away.
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<BR>Please help me!

Date of Question: Dec 22nd 2010 | Question ID: 177039

Start the game. If the screen stays black, restart your DSI and try again. When and if you get to the main menu, click new game. Your town will be restored, but it will be completely reset, so it will be as if you are playing for the first time, which is frustrating. If you never get to the main menu, contact Nintendo. go to their website, or call them. I don't know their number, but you can find it online. REMEMBER: The number will ALWAYS BE DIFFERENT for each country. For example, the number for the USA is different from the one for Canada. Hope I helped!

P.S. (mine was the last answer) It doesn't matter where your house it, wether right by the sea or not. Just put it in the next best spot. What you need right now is to have a WORKING ACWW