Install blocked with Port 9790 is in use

[crabebunker]

Hi,

After having install last Java 7u55, I can not install the Minimserver 0.8.1.b
After 2 reboot there is still the same message :

9790 is in use by an application or reserved by the system. This can normally be resolved by waiting a minute or two for the port's connections to close. If the message doesn't clear after two minutes, reboot the NAS

What could I do ??

Thanks for the help

CB