Symphony Pro 5 crash

Hello,
I updated to version 5 of the app over the last weekend. It worked well and looked good when I used it. However after trying to import a midi file it crashed, now it crashes each time i open the app. The app disappears before I can do anything.
I hesitate to delete the app and reinstall it because I am afraid to loose all the music I have in symphony pro.  Is there a way I can reinstall the app without loosing my scores I have many scores and invested a lot of time building the library, I will be really upset to loose my work.

Thanks
Talfryn