Serial not being accepted

Hi,

Some weeks ago, Ive bought a license for SR and it worked fine but after upgrading my version of 3DSM from 2010 to 2011, my serialkey isn't being accepted anymore.
I've tried setting 3DSM to administrator rights. I've also tried putting the SolidRocks_09x.lic file in the Maxroot/solidrocks folder.
None of the methods work.
How can I get my key working for SR again?

Thanks in advance!

Build I'm using is 0.97.8 (date: 29-05-2010) so that should be the latest build.
I've created a new requestcode and an email has been dispatched. Waiting for your reply with the serial.

On a side note: does that mean that everytime I install/upgrade a version of 3DSM I need to put in a new request in order to obtain a working license?

Thanks again.

EDIT: corrected typos.

I received my new serial and all is working fine again.
Thanks Jérôme...your service is excellent...if only all companies would give such good service as you do Top notch!