The Application Does not have a valid signature !

Getting Started Newbie Questions
#1

Really, i have been building this app for the past two weeks, not one issue putting it on the device, I added my it on my new Iphone6 i just got today, made some changes tonight re-Built the app and now I get the dreaded

Application Does not have a valid signatue !!! Really you have got to be kidding me. 

Did anyone else have this issue. 

JZ 

#2

Okay, fixed it, had multiple Keys with the same value, got to remember that !!

:) 

#3

Okay, fixed it, had multiple Keys with the same value, got to remember that !!

:)