diff --git a/Scripts/SetNugetVersion.ps1 b/Scripts/SetNugetVersion.ps1
index 95cb337..d77ef0b 100644
--- a/Scripts/SetNugetVersion.ps1
+++ b/Scripts/SetNugetVersion.ps1
@@ -1,41 +1,50 @@
-# get current release version
-$version = "$env:NUGET_RELEASE_VERSION"
-
-# make sure version follows the 0.0.0 format
-if (![Regex]::IsMatch($version, '^\d\.\d\.\d$'))
-{
-	Write-Error "Invalid NUGET_RELEASE_VERSION: $version"
-	Exit 1
-}
-
-# set the correct nuget package version (depends on whether this is a release or not)
-if ("$env:APPVEYOR_REPO_TAG" -ne "true") # non-tagged (pre-release build)
-{
-	# we want to increment the patch number for unstable builds
-	$version = [Regex]::Replace($version, '^(\d\.\d\.)(\d)$', {
-		param([System.Text.RegularExpressions.Match] $match)
-		$val = [int]::Parse($match.Groups[2].Value)
-		$val++
-		$match.Groups[1].Value + $val
-	})
-
-	$version += "-unstable$env:APPVEYOR_BUILD_NUMBER"
-}
-
-# grab .nuspec file contents
-$file = "$PSScriptRoot\..\$env:NUGET_FILE"
-$contents = (Get-Content $file) | Out-String
-
-# make sure there is exactly one occurance of <version>$version$</version> in the file
-$pattern = '<version>\$version\$</version>'
-$matches = [Regex]::Matches("$contents", "$pattern")
-if ($matches.Count -ne 1)
-{
-	$count = $matches.Count
-	Write-Error "<version>`$version`$</version> was found $count times in the nuspec file. If should have been found exactly once."
-	Exit 1
-}
-
-# set the NUGET_VERSION env variable
-[Environment]::SetEnvironmentVariable("NUGET_VERSION", "$version", "Process")
-Write-Host "NUGET_VERSION set as $version"
+# make sure AssemblyInfo.cs has 
+$asmInfo = (Get-Content "$PSScriptRoot\..\$env:ASSEMBLY_FILE") | Out-String
+$pattern = '^\s*\[\s*assembly\s*:\s*AssemblyInformationalVersion\s*\(\s*"[^"]*"\s*\)\]\s*$'
+if (-not [Regex]::IsMatch($asmInfo, $pattern, [System.Text.RegularExpressions.RegexOptions]::Multiline))
+{
+    Write-Error "AssemblyInformationalVersion was not found in $env:ASSEMBLY_FILE"
+    Exit 1
+}
+
+# get current release version
+$version = "$env:NUGET_RELEASE_VERSION"
+
+# make sure version follows the 0.0.0 format
+if (![Regex]::IsMatch($version, '^\d+\.\d+\.\d+$'))
+{
+	Write-Error "Invalid NUGET_RELEASE_VERSION: $version"
+	Exit 1
+}
+
+# set the correct nuget package version (depends on whether this is a release or not)
+if ("$env:APPVEYOR_REPO_TAG" -ne "true") # non-tagged (pre-release build)
+{
+	# we want to increment the patch number for unstable builds
+	$version = [Regex]::Replace($version, '^(\d+\.\d+\.)(\d+)$', {
+		param([System.Text.RegularExpressions.Match] $match)
+		$val = [int]::Parse($match.Groups[2].Value)
+		$val++
+		$match.Groups[1].Value + $val
+	})
+
+	$version += "-unstable$env:APPVEYOR_BUILD_NUMBER"
+}
+
+# grab .nuspec file contents
+$file = "$PSScriptRoot\..\$env:NUGET_FILE"
+$contents = (Get-Content $file) | Out-String
+
+# make sure there is exactly one occurance of <version>$version$</version> in the file
+$pattern = '<version>\$version\$</version>'
+$matches = [Regex]::Matches("$contents", "$pattern")
+if ($matches.Count -ne 1)
+{
+	$count = $matches.Count
+	Write-Error "<version>`$version`$</version> was found $count times in the nuspec file. If should have been found exactly once."
+	Exit 1
+}
+
+# set the NUGET_VERSION env variable
+[Environment]::SetEnvironmentVariable("NUGET_VERSION", "$version", "Process")
+Write-Host "NUGET_VERSION set as $version"