Hi wirerzo,
Sorry to hear you are having problems. I downloaded and patched the game myself just now; everything went fine. So the problem lies elsewhere.
nel_drv_opengl_win_r.dll is indeed of an incorrect date; judging by the date it appears to not have been patched at all, so it appears that something has gone wrong during the patching process.
Have any of the other files in your Ryzom installation directory been modified by the patcher? (They would have the date and time of when you patched)
What is the date/time of the client_ryzom_rd.exe file and client_default.cfg files?
To force a repatch, you can delete the "unpack" subdirectory in your Ryzom installation.
Should that give no solution, you can download the correct versions of the files here:
ftp://ftp.ryzom.com/nel_drv_opengl_win_r.dll
ftp://ftp.ryzom.com/nel_drv_direct3d_win_r.dll