Hi,
sorry for the late reply – i am unable to test the nightly – trying todo that results in this message:
Fail to load plugin descriptor from file jrebel-nightly.zip
But i am using currently version Rebel Agent 7.0.0 (201611081555) and i am not experiencing this issue anymore – i can use the “non” legacy agent and it does not fail with the NoClassDefFound error anymore, so this seems to be fixed already.