Motn I got the same error (-1) and then the others.
Try some more times repeating the step 7 until you dont get any error. Then go to step 8.
If you keep getting that damn error, verify you Internet Connection since that program downloads and Install files, but you should get it working after running step 7 over and over (I needed 4/5 times, I'm not sure).
falcozx:
1) I dont know ...
2) You will get a mix of the new and old update. You get Shop Channel of the new 3.3 and the other things of the old update that allow you to do everything with your Wii (the best of two worlds
)
3) I think it only makes what I said before, until step 8. If you make step 9, etc... you will get Wiigator's Backup Loader Channel. (I didnt made it cause I prefer to have everything on a SD card and boot them using HB channel)
Gecko OS works, but I dont know about the rebooter option since I dont use it, but it should work too. Menu Loader probably works, but I dont know.
About your second post, this will give you a mix of two firmwares. The wads you install in the guide, until step 8, are system/firmware files so they need to be there. The only way to "remove" them is making the official update again and probably the files will be replaced ... but after that you will need to do this guide again if you want things like Gecko OS and others working.