{namespace yag=Tx_Yag_ViewHelpers} {namespace extlist=Tx_PtExtlist_ViewHelpers} {namespace ptx=Tx_PtExtbase_ViewHelpers} We have to include the CSS Files here directly. As the plugin is in an uncached mode, the site around the plugin is already generated and cached and thereby the CSS Header is already generated and not modifiable. If there is a better solution .. implement it .. :)