well, it's really complicated; although the installer seems to work, and ends up with a successful installation message, corona does not appear in c4d r20, or r15, the two versions i use; i tried the procedure indicated in the help, but i can't find "microsoft dependencies" anywhere; corona has been impossible to install for the past two days!!! thank you for an urgent help!!!I've tried to submit a ticket, but the catcha always doesn't work; (it's just: checked I'm not a robot); if it is impossible to install corona after an update (probably) of windows, impossible to submit a ticket to technical help, what is possible to recover the software??????