Reduce oven temperature to 300 degrees F. Line the outside of springform pan with aluminum foil and tie crock pot liner around pan.
In a large bowl, mix cream cheese, sugar and flour together until combined.
Add pumpkin, sour cream, vanilla extract and spices and mix until combined.
Add the eggs, one at a time, and mix until after each addition.
Pour mixture into crust. Place springform inside a larger pan. Fill the larger pan with warm water to go about halfway up the side of the springform pan. Do not fill past the aluminum foil or water will get into the cheesecake.
Bake for 1 hour 40 minutes.
Turn off heat and leave cheesecake in oven with door closed for 30 minutes.
Open oven door slightly and leave cheesecake in oven for 20 minutes.
Remove cheesecake from the oven and chill in refrigerator overnight.