I've tried to open a small file I created over the weekend just to get familiar with the program and I'm getting a 'Problem occurred' message which reads. " An error has occurred. See log error for more details. java.lang.NullPointerException" I click on the details button and get the same message.The start up tutorial file that I made from following your video is opening fine.

We have enhanced the tracing in the log file. Please try to reproduce the bug, and then attach the log file to a ticket.