用opencv1.0运行人脸检测程序时出现了这个错误,是怎么回事啊?

Debug Assertion Failed!
program: ...++chengxu\facedetection\debug\camerads.exe
File:c:\program Files\microsoft Visual studio\vc98\atl\include\atlbase.h
Line:474
Expression:p!=0;
for information on how your program can cause an assertion failure,see the Visual C++
documentation on assertion.
(Press Retry to debug the application .)
终止 重试 忽略

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