Just Getting Started
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I was using Multi-DB plugin 2.9 for WordPress MU 2.9.2
Recently upgraded to WordPress 3.0.1 and Multi-DB 3.0.2.
The main blog displays blank page with no errors.
I have enabled WP_DEBUG in wp_config.php but still no errors or warnings appear. The PHP log does not display any errors either (though it normally would). All I get is a blank screen + blank error log.
I have also temporarily removed all of the other MU plug-ins that could be interfering.
I am able to access ALL of the 3000 other blogs and the wp-admin perfectly fine.
The root blog (i.e. blog_id 1) was previously located in the database wpmu_c4 (because MD5(1) = c4...) with table prefix wp_1_
Now that I am on WordPress 3, it seems that Multi-DB expects my main blog tables to be located in wpmu_global (i.e. the global database) with table prefix wp_ so I have moved those tables to comply.
I get the feeling that the code must be hitting a dumb exit(); instruction somewhere.
Please help me diagnose this problem!