Update 5.9a to 5.9x freeze

[HB9ODP]

Hello, I have a working swisslog config vs 5.9a but when I update to 5.9b or 'c' or the newer 'd', when I start Swisslog I see the Entry QSO, logbook, statistic overview, DX cluster windows and then it 'freeze'. CTRL+ALT+DEL, terminate application, etc.
Even with administrator rights, user right lowered, UAC, etc.
Anyone with same problem? What's my mistake?
Maybe I need to make some manual config?

OS MS Windows 7 Pro SP1 64bit.

Regards
HB9ODP Mattia