Machining PowerPac Navigation Tree Unreadable!

Hi there - this is my first post here and I am new to Robotstudio and just working my way through some tutorials on how to use the Machining PowerPac. Getting the hang of it except the tree in all the PowerPac menus are so small that the line size makes them inoperable. I have attached a screenshot. this also affects the simulation window and means I can't play/stop/close the simulation. Have had a look through the preferences but can't see any way to change this. Has anyone else had this issue or is it a systems problem? Robotstudio itself does not have an issue. Appreciate any help with this frustrating problem. Thanks