KOReader Dictionary Not Working On Kobo Aura One

Hello!

I'm not able to make the dictionary work on KOReader under Kobo Aura One.

Details:

• Device: Kobo Aura One 8GB version
• KOReader version: v2015.11-1402-g8ef783f
• Kobo Start Menu version: 08(2015.10.27)
• Kobo Firmware version: 4.6.9995 (10/11/17)
• Dictonary: Webster's 1913 dictionary
• Dictionary files:
  dictd_www.dict.org_web1913.dict.dz
  dictd_www.dict.org_web1913.ifo
  dictd_www.dict.org_web1913.dict
• Dictionary files location: .adds/koreader/data/dict/
• Error message: No definition found

In the KOReader search menu, under "Installed dictionaries", it clearly says "Webster's Revised Unabridged Dictionary".

Any suggestions?
Thanks in advance!