Comodo AntiVirus for Mac with Yosemite

I just updated Macbook to Yosemite. Now Comodo Antiviurs (free) no longer working. It indicated “the virus scanner is not working properly”, but when trying to use "diagnostics’ nothing is happening. Updates the same - nothing happening. What is the problem with Yosemite and how can it be fixed?

Note that full scan did not work even before, only critical area scan seemed to work.

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