There is currently a bug affecting a small number of customers that causes the editor to display a white screen.
Here is something to try that typically fixes the issue.
- Select the file menu in the editor and go to User Settings
- Select Interface on the left
- Change the grid spacing setting to a different number (.1 as a minimum)
Once you change the setting and save you can go back in and set it back to what you had it at prior and it should be ok after that.
Note: You may need to log out and log back in before seeing the change.
Please contact Technical Support if this does not resolve your issue.