Opening experiment on another computer by sending files via email

I am trying to send psychopy file to another one via e-mail. Even she did not try to run the experiment, she got an error at opening the file. How can I solve it?

Does she have PsychoPy installed? What was the error?

First of all, thanks for your reply. Yes, she has psychopy on her computer. When she clicks on the file I sent via e-mail, a gray screen remains, and she cannot view the file.