I did find an answer to why the credit was calculating at zero (Thanks Luis from Turbotax support). It does have to do with AMT. If your Regular Taxes Before Credits - Credits < Tentative Minimum Tax you get no credit.
To verify the numbers visit "Federal" -> "Other Tax Situations" -> Alternative Minimum Tax. This will show you your Tentative Minimum Tax.
You can then visit Tax Tools -> Review Tax Summary and Look at Tentative Tax - Total Credits and if that number is smaller than the Tentative Minimum Tax you get $0.00 credit.
If you switch to an itemized deduction you have a few (Charitable Donations, Sales Tax, and I think Mortgage Interest) deductions that get subtracted from Alternative Minimum Tax which might be enough to get you a credit.
Hope this helps others.
