Correct procedure for a second GPU installation

[GIOLETS]

Can someone suggest me which would be the correct procedure in order to install a second video card?

I'm running Octane 2.20 RC2 on Cinema R13 version.

I've tried to install the additional GPU card (GTX 750, that is correctly seen by windows 7.
Also I've checked on Octane standalone and both the card are correctly seen.

When I use the C4D plugin I've the following:

- c4doctanepresets.dat reading error
- no devices
- no Account data
- no path
- no image in Live viewer window

I've tried to set data on Octane setting windows tring to:
- activate my licence
- setting the path

but each time the Octane setting windows is empty of data and no device are seen.

Also I've tried to deactivate and re-activate the licence from the web page, but without success.
Could someone help me?

Thanks.

Luca

[GIOLETS]

I think to have solved...
my fault installing GPU driver too older.

thanks to all in any case.

Luca