CHIRP

Scenario:
A: computer with Windows 8.1 64bit language italian, installed CHIRP daily-20150814 language select: auto. Chirp language italian
B: computer with Windows 7 32bit language italian, installed CHIRP daily-20150814 language select: auto. Chirp language italian
And no problems, for both.
After Upgrading the computers to windows 10:
Computer A: Windows 10 64bit language italian, installed CHIRP daily-20150814 language select: auto. Chirp language italian but change language doesn't work. Still auto, after every selection (and any language). this happen in Open as Administrator too.
Computer B: Windows 10 32bit language italian, upgrade CHIRP daily-20151005 language select: auto. Chirp language english but change language doesn't work. Still auto, after every selection (and obviously not in italian :-)). this happen in Open as Administrator too.
Thanks in advance for the help and best regards.

Fabrizio