Ubuntu 16.04 LTS : can't create an stm32 project
so, I believe that you have Mars CDT base Eclipse.
I just tried to create a project for STM32VLDISCOVERY board. It works all right for me.
Since I can’t reproduce the issue as you do, I can’t provide verified solution for you, other than suggestion.
1) try update openstm32.
From Help => Check for Updates
Update all to latest.
2) If the first step wasn’t fix the problem, edit eclipse.ini ,
insert this 2 lines
--launcher.GTK_version
2
before
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.7
Good luck.
BNow