This appears to be an exact duplicate of the bug 429794, which I just filed.
From the stack trace, I'm wondering if this is a bug in the nvidia-glx driver:
$ dpkg -S /usr/lib/libGLcore.so.1 nvidia-glx-185: /usr/lib/libGLcore.so.1
... but I can't select the nvidia-graphics-drivers-185 package, so I'm not sure if the correct people have visibility.
This appears to be an exact duplicate of the bug 429794, which I just filed.
From the stack trace, I'm wondering if this is a bug in the nvidia-glx driver:
$ dpkg -S /usr/lib/ libGLcore. so.1 libGLcore. so.1
nvidia-glx-185: /usr/lib/
... but I can't select the nvidia- graphics- drivers- 185 package, so I'm not sure if the correct people have visibility.