Sage 50 Program shutting down/crashing

I started using the 2017 student version for my final accounting class project. I went to Tasks->purchases/inventory, the dialogue box popped up, and then the screen went blank and the program completely crashed and took me back to my desktop. It did the same thing when I went to Tasks->sales/invoicing.

I tried restarting my computer, which didn't help. I then uninstalled Sage on my laptop. And installed the 2018 version. I had to start over on my project by entering the beginning trial balance amounts, which I could do successfully. When I went to try to create a General Ledger Trial Balance report, and the system crashed once again.

How can this problem be resolved??