I am upgrading from 1.9 to 2.0 and have 1 error that is still limiting the upgrade. Any help on this issue would be helpful.
Build FAILED.
"C:\Inetpub\wwwroot\build\nop.proj" (Deploy target) (1) ->
"C:\Inetpub\wwwroot\NopCommerce.sln" (default target) (2) ->
"C:\Inetpub\wwwroot\Libraries\Nop.Services\Nop.Services.csproj" (default
target) (5) ->
(GenerateSerializationAssemblies target) ->
SGEN : error : An attempt was made to load an assembly with an incorre
ct format: C:\Program Files\Reference Assemblies\Microsoft\Framework\.NE
TFramework\v4.0\Microsoft.CSharp.dll. [C:\Inetpub\wwwroot\Libraries\Nop.
Services\Nop.Services.csproj]