[Zope] problem with PloneLanguageTool, LinguaPlone, without event show in Calendar

Hi, all, I met a strange problem, when i installed: LinguaPlone 0.7 PloneLanguageTool 0.5 It seems everything run well, but when I use Quickinstaller to install these 2 products winthin a plone site, then I met a problem: 1. I coul add any events, but it couldn't show in Calendar, no link in the Calendar 2. when I creat a new plone site in ZMI, without to install the 2 products, the events' link to calendar works well. But I really need the function that these 2 products would provide, Pls help out. My Env: Zope 2.7.3b2-0, python 2.3.4 Plone 2.0.4 (Sorry to post the not exact list, but i couldn't make a subscription to plone-user) TIA Zhou Zhen