First error with no other information:
xo-logger-errors class=outer error

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Undefined index: categories in file /kernel/icmspersistablecontroller.php line 90
Invalid argument supplied for foreach() in file /modules/imtagging/class/category_link.php line 221

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In the admin section of imtagging:
Undefined variable: params_of_the_options_sel in file /kernel/icmspersistabletable.php line 632

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The category link administration seems not work propper, because links you have added are gone and the +add new category see below shows no reaction or action if you click to add a new category and when you click on the button send at the end of this line!

onclick='jQuery('* new_category_tray').toggle()'>+ neue Kategorie

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If you click on start module from the admin section, you got a blank page. A user call me, he said look at my installation, i see he was in front to install the protector module, when the protector is not installed, there comes one error warning more in the database queries, that the imtagging module cannot add or create a table in the database! After installing the protector module, the error is gone.

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The imblogging seems to work fine, theres some language variables missing, thats not a problem!

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ImpressCMS 1.1.2
Firefox 3.07
JRE latest version is installed, configuration is ok
PHP 5.28
MySQL 5.054