[TYPO3-english] Problem with Content Type LIST (Plugins)

[Hendrik]

Hi,

after Typo3 Update to 4.5.4 (from 4.2.x) no plugin works anymore but 
tt_news.

If i'm including the plugin with typoscript like page.5 < 
plugin.tx_indexedsearch it works fine, but if i'm selecting any other 
plugin than tt_news like indexed search the output is empty on the frontend.

so i've debugged the function / script but they not called or included 
by typo3.

why works tt_news and no other extension in the plugin content element?

i'm frustrated, please help!
thanks!

henny