opencv 2.4.5 and up not compatible ???

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Hi guys, i just learned opencv. My windows is 8.1 64 bit, visual studio 2012. when I tried code here and using opencv 2.4.5 it run fine. when i upgrade to opencv 2.4.9 and change the library in the code to 2.4.9 version the code compiles fine, but when running, the title window shows strange symbols. The control window didnt show anything, just grey. any suggestion or info whats happening ?

using 2.4.4, 2.4.6 , 2.4.7, 2.4.8 didnt work too ; must exact 2.4.5, shouldnt the code should be fine on all version ?