License Key Invalid after upgrading to 9.5.1

[pould]

I am a customer of 1&1 Internet, and after upgrading Plesk is reporting that my licence key is invalid. Help!!! The virtual server is running CentOS 5.

 

[pould]

This problem appears to have resolved itself. Something you guys did at your server?

 

[Jean-PaulL]

hi, i have same problems. i can't update to 9.5.1 with 1and1, i contact 1and1 support but i'm waiting a hotfix