Please run your launcher for a client update to fix the following:
Molten Arena & Deathmatch Crashes
Corrected an issue that could cause your client to crash when defeating the enemy tower.
Map & Gatherer's Hat
Corrected an issue with gatherable ores and plants sometimes being incorrectly positioned on the main map window when using the Gatherer's Hat if you have Windows Scaling set to anything other than 100%.