Yes, but have you had any stages on that before? As in do you have any .rel's in your module folder? Otherwise I don't think anyone else has had a problem with that stage.
When you say full potential, what exactly do you mean? There are a lot of ways to use said programs. Sadly I cannot help you with DasDonkeyBox as I haven't meddled with that just yet, but I can help with the textures. Also I'd download The Gimp instead of using Paint, but that's just a personal preference.
Possibly, but doubtful unless you have the mother-load haha. It doesn't make any sense that it doesn't even launch. Maybe back-up everything and format your Sd card? There has to be an error somewhere or it would definitely work.
I'd say pick apart your .Gct or .Xml (depending on Gecko or Riivo) and see if any codes are clashing. If you're using a larger code such as Brawl+, Brawl-, etc. then they do happen to clash with a code here or there.
The Gct is needed yes. Also Beyond's Riivo doesn't show all the normal stuff that Riivo shows, because it works off of the Gecko set-up. You shouldn't change anything at all with his, just launch it. Also, do you have most of your files set up like Gecko? This is needed for Beyond's Riivo to work properly. The only thing that will be different is you don't have to use the sc_selcharacter, because you'll be using common5.pac. Another thing to check is make sure none of your file extensions have en on the end of them (such as common5_en.pac).
That's strange as my Norton doesn't have a problem with it at all...
You got it from the Vault right? I wouldn't really trust typing it in to google for instance. Also if it continues to do so you'll have to turn your firewall off temporarily to allow it through. Unless it is getting through in which case you'll have to go into Norton and let it know you think it's a safe file...if that makes any sense to you.
Never tried the stage personally, but you put it over the right stage correct? Also make sure if you did put it over the correct stage that you don't have a left over .rel file for another hack you may have used on that stage.
Considering the clothing and what-not is actually part of the characters vertices then I'd say no. You'd have to vertex the character down to a base model to do this.
Are you using Gecko or Riivolution? If Gecko then you only need the sc_selcharacter.pac, however if you're using Riivo you need the common5.pac. Also go here: http://forums.kc-mm.com/index.php?topic=19915.0