[xwiki-users] Lucene File Indexing

Hallo, I noticed that lucene is capable of Indexing various office files (excel, word, outlook mails); however, this doesn’t happen automatically. When I add the file it does not get indexed no matter how long I wait. When I rebuild the Index via the administration terminal the files get indexed. Also I get an error in the logs (error getting content of attachment … of doc …). Is this an Lucene Error or has it something todo with my configuration? Thomas