hmm something in this server environment is preventing the variables in the settings_sql.php file from being availble to the plugins... still investigating.
go to your admin panel, click on "plugins" and then click the install icon beside clean_url. (you will need to also do the same with the twitter plugin)
if you dont plan on using clean Urls or the twitter mod you can delete those plugins and the error will go away.
This was my fault beuuase I included those plugins with the beta download.
I have install a version RC1 and the probleme is " Warning: require_once(./sources/sql/.php) [function.require-once]: failed to open stream: No such file or directory in /public_html/test/index.php on line 39
Fatal error: require_once() [function.require]: Failed opening required './sources/sql/.php' (include_path='.:/usr/share/php:/usr/share/pear') in /public_html/test/index.php on line 39 "
I have upload button config and settings_sql.php in a older version
and an another problem, I have delete a "install" and the new message error is
" Warning: array_merge() [function.array-merge]: Argument #2 is not an array in /public_html/test/index.php on line 46
Fatal error: Database error in "/public_html/test/index.php(105) : eval()'d code" on line 7
Table 'topofwow3._sites' doesn't exist in /public_html/test/sources/sql/mysql.php on line 88"
Looks like somehow I missed fixing this in the installer, I will be posting an update later today that will be the official RC1 release, I'll ensure the installer works as it should.