As the subject states, if the password for a wireless network contains a % sign, Joule will not connect. The 'Enter you password, please" prompt simply disappears once the password is entered and the user clicks 'Okay'. It does not appear that an attempt is even made by the app to connect to the wireless network. It is likely a string escape issue. I was able to connect to the same wifi using this password a couple of revisions ago so this might be a bug introduced in a recent revision.