Update is succesfull but no new files in app folder

I've made a new update, published it to my FTP server, then I run wyUpdate, everything is ok, update is installed succesfull(update is installing very fast). But I see that there are no new files in my app folder and one of important files is missing (app.config)!!! So after updating my app crashes 🙁 What is wrong? In my update there is one .exe file, application .config, and four dlls.

Best regards

Let me ask 2 questions:

Did you store your version of your software in separate folders? Did you add all files from both versions of your software? (See Step 6 from the step-by-step walkthrough).

Thanks for info, there wasn't all files in update. Now it's working perfectly 🙂