I found a solution to my problem - I compared the file ~/.config/kdeglobals between a fresh install and one that was updated from plasma 5. Under the [General] section there are 5 lines with font names and a series of numbers (same as in the error message in the first post). These entries were very different between the 2 files. I replaced these lines on the fresh install with those from an updated install and the problem disappeared immediately. No side effects noted as of yet. Thanks to those who were trying to help me figure this out.
1 Like