When I open the Maintenance Manager and got example go to the place it allows me to click on is Engine - Open Engine and then nothing happens. The same happens for the other options. Nothing displays underneath for me to be able to fix on the plane.I am then unable to exit out of that window as well. I can click and proceed to other areas of the software but it wont let me X out of that popup. Clicking on the X only moves the pop-out over on the screen.When I go into airframe manager and start a new airframe nothing happens either and then I am unable to X out of that box as well. Has anyone encountered this before or know a fix for this? Thank you in advance!