C2DM configuration incomplete, accountName is not set

Hello everyone:

Every time I send any command to Android devices from SMC console -install/unistall apps for instance-, I fails and I recieve an error like this:

Error report created at: Wed May 07 15:01:14 CEST 2014

Sync URL:                smc.iss.es:80/servlets/OmaDsServlet

Sync URL SSL:            smc.iss.es:443/servlets/OmaDsServlet

Message:

C2DM configuration incomplete, accountName is not set

 I have searched in the forum and documentation without success. I have realized that some users had the same problem, but thed had no answer or it was fixed without any action.

The firewall rules are properly configured and I don't know where is the problem. Any idea?

Thanks in advance!