How to use sand box gamemaker on kubuntu11.04?

[kool_Kartikey]

I have installed it but it was cancelled when 85%of it was installed.Now,it can't be uninstalled.The window of the software appears like this:
I want to know if it is right?
If not,How to uninstall it?

[Snowhog]

I have installed it but it was cancelled when 85% of it was installed

Meaning that it wasn't installed (completely). First thing is to attempt reinstalling the package. Open a console and type:

sudo apt-get install --reinstall sandboxgamemaker

[kool_Kartikey]

when I uninstalled opera it started automaically after uninstalling