Fix symbol file & exceptions on startup in CLI

SpritePacker-CLI/SpritePacker-CLI.csproj

@@ -6,8 +6,8 @@
     <ProjectGuid>{6EF47B64-1920-4827-BEEF-B262D5A2D214}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>SpritePacker</RootNamespace>
-    <AssemblyName>SpritePacker</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AssemblyName>SpritePackerCLI</AssemblyName>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <DebugSymbols>true</DebugSymbols>

SpritePacker-GUI/SpritePacker-GUI.csproj

@@ -7,7 +7,7 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>SpritePacker.GUI</RootNamespace>
     <AssemblyName>SpritePacker-GUI</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <DebugSymbols>true</DebugSymbols>

SpritePacker/SpritePacker.csproj

@@ -7,7 +7,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>SpritePacker</RootNamespace>
     <AssemblyName>SpritePacker</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

SpritePacker/Utilities.cs

@@ -21,8 +21,10 @@ namespace SpritePacker
 
 		public static string GetEmbeddedResourceContent(string resourceName)
 		{
-			Assembly asm = Assembly.GetExecutingAssembly();
+			Assembly asm = Assembly.GetCallingAssembly();
 			Stream stream = asm.GetManifestResourceStream(resourceName);
+			if(stream == null)
+				throw new FileNotFoundException($"Error: The embedded resource with the name {resourceName} does not appear to exist.");
 			StreamReader source = new StreamReader(stream);
 			string fileContent = source.ReadToEnd();
 			source.Dispose();