Comment 2 for bug 1054049

StacktraceTop:
 __normal_iterator (__i=@0x30: <error reading variable>, this=<optimized out>) at /usr/include/c++/4.7/bits/stl_iterator.h:728
 begin (this=0x30) at /usr/include/c++/4.7/bits/stl_vector.h:519
 functionSetEnabled (num=0, obj=0x8feda0, this=0x0, enabled=true) at /build/buildd/compiz-0.9.8.2+bzr3377/plugins/../include/core/wrapsystem.h:181
 glPaintOutputSetEnabled (enabled=true, obj=0x8feda0, this=0x0) at /build/buildd/compiz-0.9.8.2+bzr3377/plugins/grid/../opengl/include/opengl/opengl.h:770
 GridScreen::handleEvent (this=0x8fed80, event=<optimized out>) at /build/buildd/compiz-0.9.8.2+bzr3377/plugins/grid/src/grid.cpp:789