yep. that didnt work, plan b

Author: ButchersBoy

appveyor.yml

@@ -9,9 +9,9 @@
   assembly_info:
     patch: true
     file: '**\AssemblyInfo.*'
-    assembly_version: '{stamp_version}'
-    assembly_file_version: '{stamp_version}'
-    assembly_informational_version: '{stamp_version}'
+    assembly_version: '{version}'
+    assembly_file_version: '{version}'
+    assembly_informational_version: '{version}'
   environment:
     RestorePackages: false
   install:
@@ -22,13 +22,12 @@
     project: MaterialDesignToolkit.Wpf.sln
     verbosity: minimal
   after_build:
-  - ps: nuget pack MaterialDesignThemes.nuspec -Version $env:APPVEYOR_BUILD_VERSION
+  - ps: nuget pack MaterialDesignThemes.nuspec -Version 2.0.0-ci{build}
   artifacts:
   - path: '**\MaterialDesignThemes.*.nupkg'
   - path: bin\**\*.*
 
-  version: 2.0.0-ci{build}
-  stamp_version: 2.0.0.{build}
+  version: 2.0.0.{build}
   deploy:
   - provider: NuGet
     api_key: