jahmmViz won't accept any sequence #31

What steps will reproduce the problem?
1. download/use jahmmviz here 
http://www.run.montefiore.ulg.ac.be/~francois/software/jahmm/jahmmViz/
2. use the test sequences given in the same page
3.

What is the expected output? What do you see instead?
it is supposed to show or display the sequences and can be used for the other 
functions of the jahmmViz

What version of the product are you using? On what operating system?
I'm using jahmmviz 0.2.5 on windows 8

Please provide any additional information below.