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 had exactly the same problem, checked everything but couldn't find any issues.

Problem ended up being because my project was stored on a FAT32 USB stick! Copied it to my Mac and everything worked perfectly after that.

Hope this helps!