It looks like Speccy relies on CPUID library, and my PC can't run CPU-Z properly, so most likely that is the case.
I've found my PC can run Speccy 1.11, but not in debug mode.
It crashes immediately after I click OK, so I couldn't get any meaningful log file.
edit:
It's not BSOD. Speccy 1.11 crashes after I click OK.
Yes, I'm using Japanese version of Windows.
Yes, my PC has WiFi connection.