iPhone Warning message while trying to run iphone apps in jailbroken device

[spilakalb]

I am getting below warning message while trying to run ios apps in jailbroken device and app is not running in the device.
"The identity used to sign the executable is no longer valid"
"Please verify that your device's clock is property set, and that your signing certificate is not expired."

Any idea why this warning message

 

[dhlizard]

Are these paid apps from App Store ?

 

[spilakalb]

No..I developed for my company..in ios 5..and i want to test my app before distributing to the employees