Installation problem with FExplorer

I downloaded Fexplorer signed it and tried to install again but i keep getting the error on install. can some one help me? I want to install FExplorer on my phone

Thanks

Delete that FExplorer and download http://forums.techarena.in/portable-devices/1039486.htm

There should be a setting in the app manager that sets the installation of apps to all. If that doesn't work, make sure your cer allows all the required features

i want Fexplorer For Nokia Mobile Phone 6303 classic? Fexplorer file in sis Format joes not support. plz Help me

FeXplorer file in sis format does not support.

I have a same model with me. I had copied some sis games in the phone to install the same. But later on I found that this phone does not support sis files. On searching out on some forums I found that this phone lack application support. That simply means that I cannot install any new game or application in this phone. The support is provided in quiet higher version.