System.TypeLoadException when running deployed software! Bug

I have come across a strange problem, when programming, compiling and running locally(as well as on other machines in the office) our software runs smoothly with no strange errors.

We recently decided to make sure the deployed software would run nicely as well, this is where my problem is; After compiling and setting up a deployment with WebClient Application Assembler,

as well as installing an instance of the deployed software and running it,it quickly throws an exception in swedish:

System.TypeLoadException: Det gick inte att läsa in typen Progress.Util.ResourceManager från sammansättningen Progress.NetUI, Version=10.2.2.1334, Culture=neutral, PublicKeyToken=null.

This means something like:

System.TypeLoadException: Could not read type Progress.Util.ResourceManager from assembly Progress.NetUI, Version=10.2.2.1334, Culture=neutral, PublicKeyToken=null.

I did some thinking and reading, but can not really figure out how this problem can arise (I'm pretty sure the used assemblies are deployed correctly, checked all assemblies in WCAA as well as deployed the assembliesdirectory and setting the -assemblies-variable).

My guess is that WCAA or any other software is neglecting Progress.NetUI or something, or that an assembly simply references ResourceManager without telling it in what assembly it is implemented.

Anyhow I tracked down the problematic code, wich is in the constructor of our Window-class(designable, code is generated from visual designer):;

      DEFINE VARIABLE resources AS Progress.Util.ResourceManager NO-UNDO.
      resources = NEW Progress.Util.ResourceManager("Guru.Window").
     ...
      appearance16:Image = CAST(resources:GetObject("appearance16.Image"), System.Object).
     ...
     THIS-OBJECT:ToolbarManager:Ribbon:ApplicationMenuButtonImage = CAST(resources:GetObject("ToolbarManager.Ribbon.ApplicationMenuButtonImage"), System.Drawing.Image).

It feels like Progress.Util should always be deployed with any software created with OEA, especially since the Visual Designer uses its types. Therefore I am pretty sure this is a bug.

Either way I really would appreciate some help! Thanks in advance!