Thanks for your feedback……
I am not quite sure what specific log you are looking for.
I found however the below PHP error_log:
——– LOG START ——–
[24-Aug-2012 03:19:22] PHP Catchable fatal error: Object of class WP_Error could not be converted to string in /home2/deluchin/public_html/wp-content/plugins/multisite-language-switcher/includes/MslsOutput.php on line 65
[24-Aug-2012 03:41:32] PHP Catchable fatal error: Object of class WP_Error could not be converted to string in /home2/deluchin/public_html/wp-content/plugins/multisite-language-switcher/includes/MslsOutput.php on line 65
[24-Aug-2012 03:51:47] PHP Catchable fatal error: Object of class WP_Error could not be converted to string in /home2/deluchin/public_html/wp-content/plugins/multisite-language-switcher/includes/MslsOutput.php on line 65
[24-Aug-2012 03:57:32] PHP Catchable fatal error: Object of class WP_Error could not be converted to string in /home2/deluchin/public_html/wp-content/plugins/multisite-language-switcher/includes/MslsOutput.php on line 65
——– LOG END ——–
This error log is always showing up when trying to open the tags with Multisite Language Switcher plugin enabled.
Again thanks for your help !