Invalid Signature error !

Question

I am trying to update my application , but after uploading the binary , Itunes connect sends me this email :

Dear Developer, Thank you for your recent

Answer 1

I have been battling this issue for almost a week! For me, it turned out that the Error email from Apple was completely wrong and misleading. (I knew that all of my certificates and code signing settings were in fact correct.) It turned out, that my app was getting rejected because there was an exclamation point (!) in the name. Apparently, only alphanumeric characters (A-Z, 0-9) and dashes are allowed for the product name. (Characters like ?#$% are not allowed.)

The Fix:

1.) Click on the blue project icon on the left panel in Xcode.

2.) Click on the build settings tab.

3.) Select the current target from the menu. (It's right next to the blue project icon.

4.) Scroll down until you see the "Packaging" Category.

5.) Find where it says "Product Name" and change it to a name that does not contain any special characters.

I hope this helps! Sorry I had to red-out my company info!