limited error message
hi mate,
I encountered the same issue when I installed.
I eventually found it in the forums - Just keep troubleshooting, as such an unspecific error can be anything. Follow due process.
Check you Php.ini configurations, make sure that everything that needs to be enabled is - such as php_imap , curl, mysql etc.
Make sure your server has write permissions set to the config file
make sure you have deleted the install directory
Check the wiki to make sure you did everything right.
Good luck - it's well worth the small headaches of install for such a great program.