XP to Win7 install error regarding "boot configuration"

After running the Windows Upgrade Advisor twice without issue I attempted to install the Win7 Ultimate Edition twice earlier this morning. Both times the install process was halted mid-stream and I get two pop up windows. The first says, "The installation was cancelled" and the second says, "Windows could not update the computer's boot configuration. Installation cannot proceed".

Is anyone else having this problem? Is there a workaround?

This is very annoying given the price of the software. :frown:

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