[eluser]lehi.here[/eluser]
[quote author="adamp1" date="1211899574"]Well that's meaning the autoload file cannot find the main application class. Now the class should be located in system/application/libraires/backendpro.php
If it isn't there or you changed the location of the application folder recheck the file structure.[/quote]
It's working now. Yes, there is a file called BackendPro.php. But it is in upper case, lower case combination. Once i changed that file name to all lower case, it's working. thank you very much!