In case you get some error during launch, it is reccomended to check that the launch itself contains all needed plugins. To do this, click Run -> Run Configurations… select the launch
go to Configuration tab and make sure that Clear the configuration area before launching flag be active
then go to Plug-ins tab and verify that all dependences are resolved, with button Validate Plug-ins
if you get a popup with message “No problems were detected.” you are done, otherwise, if some dependence is missing, press button “Add Required Plug-ins“, then Apply.