[TYPO3] Contextmenu in pagetree doesn't show up.

[Andreas Balzer]

Hi,
I use T3 4.2b3 and I have the following extensions installed. What can 
be the reason? / How to solve it?

Greetings,
Andreas

typo3conf/ext/abcsstidy/
typo3conf/ext/ameos_formidable/
typo3conf/ext/cal/
typo3conf/ext/cc_langguess/
typo3conf/ext/cc_meta_xmp/
typo3conf/ext/cc_metaexec/
typo3conf/ext/cc_metaexif/
typo3conf/ext/cc_textcat/
typo3conf/ext/cc_txtextexec/
typo3conf/ext/cc_txtextphp/
typo3conf/ext/ce_gallery/
typo3conf/ext/ch_handbuch/
typo3conf/ext/chc_forum/
typo3conf/ext/cms_plaintext_import/
typo3conf/ext/content_uneraser/
typo3conf/ext/cron_feuserscase/
typo3conf/ext/cwt_community/
typo3conf/ext/cwt_community_user/
typo3conf/ext/dam/
typo3conf/ext/dam_catedit/
typo3conf/ext/dam_index/
typo3conf/ext/dam_info/
typo3conf/ext/dam_ttcontent/
typo3conf/ext/date2cal/
typo3conf/ext/de_extcontentcomments/
typo3conf/ext/devable_gallery/
typo3conf/ext/direct_mail/
typo3conf/ext/eco_gal/
typo3conf/ext/esserfurt_yearofgraduation/
typo3conf/ext/flvplayer/
typo3conf/ext/frontendformslib/
typo3conf/ext/gabriel/
typo3conf/ext/indexed_search/
typo3conf/ext/jk_poll/
typo3conf/ext/kickstarter/
typo3conf/ext/ks_cacheall/
typo3conf/ext/kyak_metaaudio/
typo3conf/ext/mc_googlesitemap/
typo3conf/ext/mwimagemap/
typo3conf/ext/newloginbox/
typo3conf/ext/openads_tags/
typo3conf/ext/page_php_content/
typo3conf/ext/pbsurvey/
typo3conf/ext/pbsurveyexport/
typo3conf/ext/phpmyadmin/
typo3conf/ext/plugin_mgm/
typo3conf/ext/pmk_rssnewsexport/
typo3conf/ext/pmkslimbox/
typo3conf/ext/rf_content_comments/
typo3conf/ext/rgsmoothgallery/
typo3conf/ext/skin_grey_2/
typo3conf/ext/sr_feuser_register/
typo3conf/ext/sr_freecap/
typo3conf/ext/static_info_tables/
typo3conf/ext/swg_tca_ext_10mb/
typo3conf/ext/sys_messages/
typo3conf/ext/sys_notepad/
typo3conf/ext/t3quixplorer/
typo3conf/ext/taskcenter_recent/
typo3conf/ext/taskcenter_rootlist/
typo3conf/ext/tcdirectmail/
typo3conf/ext/ter_update_check/
typo3conf/ext/timtab_badbehavior/
typo3conf/ext/tipafriend_plus/
typo3conf/ext/tm_shared_lib/
typo3conf/ext/tstemplate/
typo3conf/ext/tstemplate_analyzer/
typo3conf/ext/tstemplate_ceditor/
typo3conf/ext/tstemplate_info/
typo3conf/ext/tstemplate_objbrowser/
typo3conf/ext/tstemplate_styler/
typo3conf/ext/tt_address/
typo3conf/ext/tt_news/
typo3conf/ext/vjchat/
typo3conf/ext/w4x_backup/
typo3conf/ext/wec_map/
typo3conf/ext/zed_more_columns/
typo3conf/ext/dam_act_edittxt/