Strange display in historical battle

[I Am Herenow]

I wanted to play a historical battle in 1.1, but the initial screen looked rather bizarre:

http://img29.picoodle.com/img/img29/4/5/7/f_RomeTW20080m_8de0eb3.png

Any idea what might be causing this?

I Am Herenow

[Ludens]

I get the same thing. No idea what causes it.