Thanks Larry! For some reason, it seems that Ubuntu installed over Windows is not able to boot if the disk is "dirty", meaning that the shutdown was done improperly. It is possible to fix that by logging into Windows and running "chkdsk /r". I don't have a Windows system to test that, so I will mark this bug as open and affecting Wubi hoping that someone else can pick up this bug report.
Thanks Larry! For some reason, it seems that Ubuntu installed over Windows is not able to boot if the disk is "dirty", meaning that the shutdown was done improperly. It is possible to fix that by logging into Windows and running "chkdsk /r". I don't have a Windows system to test that, so I will mark this bug as open and affecting Wubi hoping that someone else can pick up this bug report.