# FBX Importer AssertionError (unknown location -1) when importing .fbx from wow model viewer [closed]

Using version 2.75 I am unable to import .fbx files from WoW model viewer into blender.

Attempting to do so throws an AssertionError.

Assertion Error

location: <unknown location>:-1


Does anyone know what is going on here and what I can do to fix it?

I had a similar problem but I could not find a solution. It turned out that Visual Studio 2013 (Professional; I don't know whether the Express version is enough) and Unity (a gaming engine; in case you didn't know) were both able to import the file correctly.
Finally, I imported the file into Visual Studio 2013 and saved it as a .obj file which could then be imported correctly into blender.