The default compression type in Winzip 11 is a proprietary compression specific to Winzip 11. If you try to index documents which have been zipped with this proprietary compression, you will get the following result in the Indexed Documents list:
Error: Indexing was unsuccessful. Check the log files for details (Could not create version x).
The localhost.log for that day will show the following:
SEVERE [com.vontu.profiles.common.indexer.manager.InfoSourceIndexCreator] Error during document indexing
Cause:
com.vontu.profiles.common.IndexException: Cannot extract zip file D:\Vontu\Protect\documentprofiles\<filename.zip> to D:\Vontu\Protect\documentprofiles\<filename>
com.vontu.profiles.common.IndexException: Cannot extract zip file D:\Vontu\Protect\documentprofiles\<filename.zip> to D:\Vontu\Protect\documentprofiles\<filename>
RESOLUTION
Use the legacy compression in Winzip 11 rather than the default proprietary compression.