I developed an app using Python for s60 APIs. Now I am trying to install this app on a 3rd ed phone [nokia E62]. I tried using both signed[ uid in protected range] and unsigned version[ uid in unprotected range] of my app. The installation of signed version stops in the middle giving an error which says "cannot install a protected app from an unprotected supplier". Now I tried the unprotected version which successfully installed, but when i run it, it would just give me a blank screen and then it closes.
I used PythonForS60_1_4_2_3rdEd.SIS to make my standalone app.
I have installed the same app on Nokia 2Ed phones which worked all right.
Kindly help me.