 Bad argument (Input array is not a valid matrix) when running process_dir.exe

win8.1 64bit vs2013 cmake opencv2.4.11

> Loading CharCls Model from: cvBoostChar.xml
> Processing: ./input\0.jpg
> Detected keypoints: 4669
> Segmented: 1562/2560
> OpenCV Error: Bad argument (Input array is not a valid matrix) in cvPointSeqFrom
> Mat, file C:\builds\2_4_PackSlave-win64-vc12-shared\opencv\modules\imgproc\src\u
> tils.cpp, line 54