ERROR: glBegin called on ../../../bzflag/src/bzflag/HUDRenderer.cxx:920 without calling glEnd before bzflag: ../../../bzflag/src/bzflag/HUDRenderer.cxx:920: void HUDRenderer::render HighResCracks(): Assertion `__beginendCount==0 && "glBegin called without glEnd" ' failed. Abortito (core dumped)