CrystalMPQ exception when opening new mop files

[CrimeTime]

Hello,

does anyone of you use CrystalMPQ as library for opening mop-files with it?
I'm trying to open the file wow-update-base-16309.mpq to get the new wmo files, which are needed to meshing the pandaria continent.
But it seems like that the library doesn't support the new files, the exception what is thrown is: The base file of the patch could not be resolved.
There are sill more problems with this library, when WoW is opened and my bot tries to read a *.dbc file with it, then is the exception thrown that the file is currently opened by an other process.

Did someone got a solution for this problems?
Or can advice me to a better library?

Greets Crime