WoW Blender Studio import error

[luicius 14]

After a very long break from editing maps and the like. I've come back and got this wonderful tool working, only to be hit by this roadblock. While attempting to load the Cataclysm UC model into the addon and fix some missing textures I encounter this error. I realize I am likely a fool for missing something obvious, with respect I query if anyone has any ideas?

[Balkron 101]

• Blender version 2.78 is not supported since the release of 2.79 and 2.8
• The last up-to-date version of WoW Blender Studio based on 2.79 and given only to a small group of people for tests and bug research
• Skarn works on version 2.8. There is no release date