Segmentation Fault on Execution

[new-gen23]

Environment:
Host System: Mac OSX
Guest System: Ubuntu 13.10 virtualized in Parallels

I compiled your example code without any error. When executing OpenGLTest however, the program crashes with a Segmentation fault.
Using cgdb, it tells me that segfault happens in mesh.cpp in Line 19:
glGenVertexArrays(1, &m_vertexArrayObject);

I followed your tutorial on youtube and used glGenVertexArrays without problems. My OpenGL also works perfect in the VM, since my own program works. Now I wonder, why the segmentation fault might happen. Any idea how to debug it?