Nvidia GPU error while creating presentation Q

[seaweed]

I am runing a loop of decoding of various streams with VDPAU, using the driver version 313.30. Occassionally presentation queue create will fail. I am seeing this error code 1 748 from VDPAU trace while , Does this mean anything to anybody?

vdp_decoder_create(12, 8, 1280, 720, 3, -)
-> 0, 17
vdp_presentation_queue_target_create_x11(12, 4194312, -)
-> 0, 18
2013-04-24 17:37:03:113972 | createPresentationQueue: created a presentation target (18) for device 12, vo window: 4194312
vdp_presentation_queue_create(12, 18, -)
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library 313.30 Wed Mar 27 15:53:55 PDT 2013
VDPAU nvidia: Error detected 1 748
VDPAU nvidia: Backtrace:
--: /usr/lib/libvdpau_nvidia.so [0x7fffb1b0f000] DSO load base
00: /usr/lib/libvdpau_nvidia.so [0x7fffb1b3185d]
01: /usr/lib/libvdpau_nvidia.so [0x7fffb1b24df4]
02: /usr/lib/libvdpau_nvidia.so [0x7fffb1b2090b]
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library 313.30 Wed Mar 27 15:53:55 PDT 2013
VDPAU nvidia: Error detected 0 6181
VDPAU nvidia: Backtrace:
--: /usr/lib/libvdpau_nvidia.so [0x7fffb1b0f000] DSO load base
00: /usr/lib/libvdpau_nvidia.so [0x7fffb1b209d6]
-> 25