I know this is an old post, but i got similar issues. You wrote you are going to post some results, but there's nothing here. So please, if you have some, post them.
My current problem is this one:
I've been using wubi to run Ubuntu 10.04 for the last 2 years. In that time i've reinstalled win7 3-4 times. The only thing I did to get the wubi back and running is that I've copied these files(wubildr, wubildr.mbr) to C:. Now I've installed win8 and the thing I was doing on win7 (copying those files) dones't work in win8.
I hope some1 will know how to fix this. Reinstalling Ubuntu is not an option. Because I need the data on that Ubuntu.
Thanks.
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