Tux Paint funktioniert nicht

It is surprizingly powerful for its paradigm". -Fun sound effects are played when tools are selected and used. -A cartoon version of Tux,appears at the bottom to give tips, hints and information. -Stamps have descriptive text and sound samples (names, facts, etc.  ~~~Top education app around the world! over 10,000,000 downloads since 2002! ~~~Hundreds of awards from many media/magazines! ~~~Hundreds of school are using it for teaching! ~~~Thousands of stamps and magics and they are free!  I probably looked like a big goofy chimp here for about 20 minutes as I took Tux Paint for a spin at my local coffee shop. I swear I was grinning. What a triumph!  She knows how to change the background, change stamps, go from one brush type to another and change colos - she learned how to use it so quickly! So, I thank you.  You've created a functional, powerful, FUN piece of software my four-year-old can use!  "I just had to tell you that [our daughter] is absolutely in love with Tux Paint.  More, you can share your master piece to Facebook, Twitter, Flicker and Wechat!!  "I just downloaded Tux Paint, I am extremely impressed with the program.  And [my daughter] thanks you! :)" - Patti M.  I am very anxious for my grandchildren to try it, I am sure it will be a hit with them". "You've done it!  I know I told you that, but it's freaking me out that she is only 3 and can operate it all on her own.  There too much to write here,please don't hesitate to check it yourself!  "My daughter, soon 7, loves it.