Lock error while running program in Qt/C++

I get the following error messages,while running programme in Qt/c++ Semop unlock failure Invalid argument Semop lock failure Invalid argu开发者_如何学JAVAment

Does somebody know,why this messages come?

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If you are running on linux, see this forum thread:

http://coding.derkeiler.com/Archive/C_CPP/comp.lang.c/2008-03/msg01042.html