Make sure you take your finish in to your heated indoors, I'd let it sit inside room temperature for the day before you attempt it again. The temp of the finish has to be at usable levels as well.
Keep us informed sir!
I worked on this in the early evening and it was getting colder by the minute. Looking at weather history, it dipped into 40 degrees when I started— could definitely be a cause. I'll sand it down tonight and have a heat gun and a brush working together for the second application.