Followup: I was able to get through today (3/29) (after at least 2 transfers) to a representative that was able to understand the problem and see that it has been reported by other users. This rep will forward the information to the responsible team. No promises on a time frame for a fix, however.
In my own case, I can work around the issue by setting Line 10 in form 1041 schedule B to zero, then calculating and printing the Colorado return (filed by postal mail), and then restoring the proper value on line 10 of schedule B on the 1041 form and re-calculating/reviewing for Federal e-filing.
