Write XMP Data from plug-in(C++) in InDesign CS6 at mac os 10.7

Hello!

I created plugin which writes XMP data into indd document. And I have trouble with mac os 10.7 (or higher) - InDesign has crash, at the mac os 10.6.x all works fine. I use xCode 3.2.6, Adobe SDK CS6, XMP toolkit SDK (the latest version).

Any idea why it doesn't work at mac os 10.7 or higher?