No, it just means you are on a custom firmware version older than 2.11. Older versions aren't able to detect the Humax version.Just noticed on the web interface is not picking up the humax version number.
Release Notes: Firmware | Webif
Web interface version: 0.9.10-1
Custom firmware version: 2.10
Humax Version: ?.??.??
Is it likely to cause any problems?