Java, FlexLM and CRO

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Hi all,
I am dealing with Java-based software that is protected with FlexLM.

I have extracted seeds, found feature names, created license file and signed it with lmcrypt.

This software is protected with CRO. I have patched several its classes, now in license status window it shows that licenses are available. But when I try to start application I get the following error:

License check out call fails: com.macrovision.flexlm.FlexlmException: Server's Feature Doesn't Authenticate On Client Side (-510,3046)

What should I patch to fix that?