Trouble in recognition with release version

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Hello. I'm using OpenCV 2.4.9 and OpenCVSharp. DLLs that are picked under x86 and VC10. For recognition using Haar cascades. The problem is, when running program from visual studio - everything works okay. Recognition - excellent. However, when I run my program from debug folder - results isn't so well. Sometimes recognition is okay, sometimes - very bad results (openCV function "Cv.HaarDetectObjects" return 0 objects). Project build unders x86, redistributable installed.. Any ideas?