 <p>Ok, solved the proplem. It has nothing to do with the installation process. Anyway it was related to a very weird Windows behaviour. I'll try to explain:</p> <p>On the developer machine (PC1) the language setting is German(Germany). At the machine where the app is installed (PC2) the language was German(Austria). With these slight but important difference I got a FormatException when parsing a string to a double value at PC2 (',' &lt;-> '.'). After changing the language settings at PC2 the issue was solved.</p> <p>Without remote debugging I wouldn't have detected this behaviour.</p>