Not able to e-file due to simplified AMT foreign tax credit

I'm getting the following message:

 

We Won't Be Able to E-file Your Return

You elected the simplified AMT Foreign Tax Credit limitation. Print the return and file by mail.

 

My situation is not much different from last year, and I was able to e-file then. What could be causing this, and is there a way to fix it?

 

I tried going back in the questions, but got to a page that says I used the simplified method last year and must continue to use it.

 

It seems quite odd that I would not be able to e-file in my situation.