webermax/VirtualMarbleGame — comment on commit 705e5e99c119fbb1b4aae0258f5a87e2ae7efbe8
File: VideoManager.cpp line 47
By webermax:

I substituted the memcpy command with our own copy routine in commit as suggested in http://mailnavab.informatik.tu-muenchen.de/cgi-bin/mailman/private/ar-class/2011-January/000060.html:
https://github.com/webermax/VirtualMarbleGame/commit/5f3dbf44377cdea9148766244f6efa2e542b638c
It seemes to solve your issue?