Update!
I activated DEBUGGING an got this:
***
Deprecated: Assigning the return value of new by reference is deprecated in [SNIP]/wp-content/plugins/wassup/wassup.php on line 3226
Notice: register_sidebar_widget ist seit Version 2.8 veraltet! Benutze stattdessen wp_register_sidebar_widget(). in [SNIP]/wp-includes/functions.php on line 3391
Notice: register_widget_control ist seit Version 2.8 veraltet! Benutze stattdessen wp_register_widget_control(). in [SNIP]/wp-includes/functions.php on line 3391
Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at [SNIP]/wp-config.php:1) in [SNIP]/wp-content/plugins/clever-seo-keywords/clever-seo-keywords.php on line 55
Notice: Undefined index: HTTPS in [SNIP]/wp-content/plugins/clever-seo-keywords/lib/tom-m8te.php on line 90
Warning: Cannot modify header information – headers already sent by (output started at [SNIP]/wp-config.php:1) in [SNIP]/wp-content/plugins/wassup/wassup.php on line 2001
WordPress database error: [The used table type doesn’t support FULLTEXT indexes]
ALTER TABLE wp_kreaposts ADD FULLTEXT yarpp_title
( post_title
)
WordPress database error: [The used table type doesn’t support FULLTEXT indexes]
ALTER TABLE wp_kreaposts ADD FULLTEXT yarpp_content
( post_content
)
Warning: Cannot modify header information – headers already sent by (output started at [SNIP]/wp-config.php:1) in [SNIP]/wp-includes/pluggable.php on line 1196