Question All the letters and numbers have disappeared from our LM5D plug-in. What's going on

On Mac OS X, some Adobe software installers may inadvertently - unfortunately - move some Arial fonts to the 'Unused fonts' folder of Mac OS X, which breaks the text display of the LM5D! How to fix: move the Arial fonts back to ./Library/Fonts/ and reboot your system - then the numbers and letters on the LM5D should be back again.