Cinema 4d r21 crash with Octane 4.05-R7

[robjrobj]

Hi
I installed on the same machine Cinema 4d R19 and R21
In R19 Octane works properly
I installed the plugin also in R21 but (after sign out in R19) when I sign in, I see in left bottom corner of Cinema "Plugin activation OK" and after that Cinema close itself
I installed other plugin like X-particles and Cycles4d and they work well

I used the 4.05-R7 version plugin

[bepeg4d]

It seems that plugin is not correctly installed.
Please, also share a screenshot like this one:

ciao Beppe