Zip Archive Library decompression with AES-256

I am using Zip Archive library for compressing and decompressing files, i needed to enable AES encryption so by Uncommenting

#def ZIP_AES

in the _features.h file included with the library and recompiling I got CZipException for decompression

"WinZip AES encryption has not been enabled for the开发者_Go百科 library, but is required to decompress the archive."

Am i missing something? please any guide would so much appreciated.

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Thanks to Oli Charlesworth; there was a conflict between the lib file produced from the free library and the one i bought thanks a lot.

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I strangely got this error when the program in question needed Pkzip encryption, not AES encryption as the message suggested.
(While this isn't OP's problem, I'm mentioning it for future readers)