The profile import shouldn't be required. I've installed Ubuntu or various builds off of it half a dozen times, and I've never been required to import a profile. Using the Wubi installer can bring some problems. Using the traditional installer is honestly not all that complicated, you could try it that way, rather than fighting just to get an installer working.
Have you tried the Ubuntu forums? They have a lot more support for Linux related problems. In fact, they have an entire thread dedicated to a wide host of Wubi problems. Here's their website. www.ubuntuforums.org.
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"Saying you love someone is not enough,
it's how you treat them that shows your true feelings." -Ryanne Mace