System Workbench for STM32

Hi all,

I work with System Workbench eclipse Neon version and J-Link adapter.
I have a few questions that I will post here:
1. Does anyone know what can be the cause of a java.lang.NullPointerException when trying to aplly
a project compiler setting? I get this message after having a software update for the eclipse IDE.
This message pops-up after each hit of the Apply button.

2. Does anyone know how to find the path for the gdb debugger, on the configuration Debugger tab,
when debugging with JLink? The $cross_prefix and $cross_suffix doesn't work?

Thanks advance for help!

Regards,

Max