Problem hosting Codeigniter 2.0

[eluser]Unknown[/eluser]
I host my website with justhost.com, I have hosted several codeigniter website based on 1.7.2. I get an "Sever Error" when I use Codeigniter 2.0. I have tried to delete the .htaccess file in the root folder and in cache folder but it does not work. Anyone who has hosted codeigniter 2.0 in justhost.com? or what might be the problem and possible solution..

[eluser]cahva[/eluser]
Is it an "Internal Server Error"? Then more descriptive error can be found in the web server's error log.

[eluser]InsiteFX[/eluser]
Check your PHP version on the host!

InsiteFX