The 8756 drivers fail to compile a shader, printing a large infolog with "internal compiler error" messages. The same shader compiled correctly with older driver versions, and with other video cards. The nvidia-bug-report.log file is too large for the forum's upload limit, so I've put it in zip/tar files along with test data to reproduce the problem, and the shader compiler error messages for you. The files are posted for you here, and include
I've attached the shader compiler errors as an attachment since they are small.