I configured opencv with codeblocks 12.11 svn (MingW gcc compiler), when I run a code from sample directory of opencv it shows an strange error message related with dlls. Although there have all of dlls. The message says "The procedure entry point ZNSt8_detail15_List_node_base11_M_transferEPS0_S1_could not be located in the dynamic link library libstdc++-6.dll." and the heading is "Entry Point Error Found". I'm using windows 7 x86. Please help. How to configure opencv 2.4.6 properly and why this error message shows.