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When I try to launch the VPN Client 4.9 for MAC OS 10.6, I receive this error: Error 51: Unable to communicate with the vpn subsystem. How to resolve this issue?

April 26, 2017client Error launch Mac OS Try VPN

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When I try to launch the VPN Client 4.9 for MAC OS 10.6, I receive this error: Error 51: Unable to communicate with the vpn subsystem. How to resolve this issue?

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A. This issue occurs because 64-bit support is not available with Cisco VPN client for MAC OS release 4.9. As a workaround, you can boot in 32-bit kernel mode. For more information, refer to Cisco Bug ID CSCth11092 (registered customers only) and Cisco VPN client for MAC OSX release notes.