As a general rule, Texas is very protective of homesteads.... so your primary home should be protected.  Texas does have some limited exceptions for mortgages and home equity loans.  If you used your house as collateral, then it would depend on whether or not the warnings or language were included that permited a lien.  If you're concerned that this might be an issue, then take your timeshare contract to a real estate or consumer attorney for review.  A short consult will be a small fee... but it will be worth a huge sigh of relief.