did clean install as shown in the 'how to report' topic
yesterday's version 4.3.0_97 worked without any preceived issues
version 4.3.1_97 downloaded today had following issue:
only thing changed from yesterdays version was added in MultiHitLog
game goes to black screen and doesn't proceed further on loading
ran the launcher again and unchecked MultiHitLog, again a clean install, and game loads normally