Screen refresh problem in Rapid Typing application

[PeterRoots]

Hi,

Using:
Lion (OS X 10.7.3)
Parallels 7.0.15055.740667
Windows XP 5.1.2600 Service Pack 3 Build 2600

Don't have any problems running any installed Parallels applications: mostly MS products.

I just installed the application 'Rapid Typing' version 4.6 in XP. http://www.rapidtyping.com/

This application has a bad screen refresh that overwrites what 'should be' in the window with a neutral beige colour, like a background colour. This doesn't happen when you first open it, but only when you're supposed to be actively typing: you can still see the section of the window that holds the keyboard map, but not the section that holds the letters that you're supposed to type.

Could there be a memory or refresh rate setting that I can adjust?

-- Peter

 

[PeterRoots]

Just noticed that there are four 'wallpaper' modes, that change the background of the top (problem) section.
Using a 'still' background, the top section of the window is obscured and the bottom section visible.
When I use an 'animation' background, it is the top section that I can see (although the horizontally-moving images leave streaks behind them) and the bottom section that is obscured.
-- P