Lync Snooper 2013 does not parse logs correctly unless machine region is EN-US –
Snooper.exe would open the captures successfully, but you would see the following messages:
TL_ERROR(TF_COMPONENT) 12E0.201C::06/16/2013-08:07:35.116.00000d8a (S4,SipMessage.CheckNonAscii:1823.idx(809))Illegal character from S4 trace. Count:95
I can confirm that this has now been resolved in the latest version of the Lync Debugging Tools found here.