This has me stumped... I can make things work normally by installing into Eclipse version 2019-03.
Installing into 2019-06 goes without any errors, after restart, I make a simple java project. Then I do new -> UIMA -> Type system descriptor, and default things and hit finish. Instead of showing me the type system in the Configuration Descriptor Editor, it shows just a main window (blank), with a small "x" tab at the top (that when clicked, closes the window). Nothing in the error log... Regular files edit fine; the type system created can be edited with a default editor OK. Repeating this gives the same results. Repeating with Eclipse 2019-03 - works as expected. -Marshall
