The only references I found from a find in files search are the following -
In the yaf.core.csproj file-
<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
and in the web.config file -
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" />
<bindingRedirect oldVersion="0.0.0.0-13.0.0.0" newVersion="13.0.0.0" />
</dependentAssembly>
This is really wierd. 6.0.0.0 isn't mentioned anywhere in the code and I literally nuked the entire bin folder to force the compiler to rebuild it from scratch.
Any other ideas?