Twilight Struggle bug with Kitchen Debate card as headline

Dear Vassal,

I would like to inform you about a bug, which I have found recently.

Twilight Struggle Deluxe 3.0.10.a

Vassal version: 3.1.19

OP System: Windows 7 Ultimate SP1 64 bit
Model: Lenovo G560
CPU: DualCore Intel Core i3 370M, 2400 Mhz
Memory 4GB
Video card: NVIDIA GeForce 310M
Java version: 6 Update 29 (build 1.6.0_29-b11)

Bug description:

There is a card in the game called KITCHEN DEBATES*.
If I want to choose this card as headline card, i can not do it. This option: “Play as Headline event” is unplayable.

I would appreciate it if you fixed this bug.

Best wishes!