LMS 7.6.1 and 7.7.3 interoperability issues

Hi.

I've been using LMS 7.6.1 from the start, recently I've updated it to 7.7.3 but this version crashes everytime I've made a complete scan.
I've been fooled with this question, I've downgraded LMS to the working 7.6.1, scans are working pretty well but my squeezebox classic cannot find the server.
I've made a hard reset to the squeezebox, reconfigured it but nothing happens.
Please, could you help me!