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TMS320DM648: video encdec example won't lock "Wait for video port to get reset"

Part Number: TMS320DM648

I've built the examples from dvsdk_1_11_00_00_DM648 & I'm running them on the Lyrtech EVM. I've got a camera that emits CVBS (composite video blanking & sync) & its plugged into the lower J4 phono plug (& I've checked that my monitor can lock to the signal via a t-off in the coax).

It hangs in 

/* Wait for video port to get reset */
while (port->vportBase->VP_CTL & CSL_VPORT_VP_CTL_VPRST_MASK);

in

_configPort () in vportcap.c  - it doesn't seem to matter whether the camera is actually putting out video or not. Has anybody else suffered from this?

The only thing that I can think of is that the .gel file is loading another .pjt before the demo:

GEL_ProjectLoad("C:/dvsdk_1_11_00_00_DM648/examples/video_encdec/evmDM648/xdcconfig/package/xdcconfig.pjt");
GEL_ProjectLoad("C:/dvsdk_1_11_00_00_DM648/examples/video_encdec/evmDM648/xdcconfig/package/cfg/video_encdec_x64P.pjt");

 & I haven't found out why yet.