Free trial made problems with my computer

I install articulate storyline 2. I was testing it for my boss. We want to buy the programm. I made storyline some quiz to show how the programm works. Now I have a problem! My computer is stops and articulate too when I want to open the file which i made in articulate! 
When I want to open the file " the project is invalid or being corrupted ...". This problem appear when I save the changes. What I should do? Start from begining?
It shouldn't be happen!

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