application not installed in my android 2.2

[gauravbelong15]

whenever i tried to install an app or game from outside the android market a problem gets raised every time
at the time of installing app it says application not installed
even i enable the unknown sources app to be installed in my galaxy pop what should i do to get application install
recently i download 10.1 abobe flash player from megaupload
when i tried to install it . It says application installed

please help what should i do to get it install

 

[starxpilot]

Are you sure the applications you are attempting to install are even compatible? Make note of the "Supported Systems" each application has somewhere...