google mapapi key works on one android application but not on another

I have 2 android apps both are signe with the same certific开发者_如何学Pythonate, both are using the same google mapapi key created for the certificate. how come only one of the application is showing maps???

---

I am so stupid!!!

I had 2 places that used the same api key an i updated only one of them... next time it goes into the string.xml file...