[Building Sakai] Search fails, no such directory

[Joshua Swink]

Our search in Sakai isn't working, and the following is showing up in the log:

2012-01-04 13:56:05,103  WARN http-8083-Processor24
org.sakaiproject.search.journal.impl.JournaledFSIndexStorage -
Unlocked Lucene Directory for update, hope this is Ok
2012-01-04 13:56:05,170 ERROR http-8083-Processor24
org.sakaiproject.search.component.service.impl.BaseSearchServiceImpl -
Failed to get an index searcher
org.apache.lucene.store.NoSuchDirectoryException: directory
'/local/users/sak/tomcat10c/sakai/indexwork/index-import/38210' does
not exist
        at org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:504)
...

How can we get search working again?

We have exactly one Tomcat instance that performs indexing and
services search requests. We're using Sakai 2.7.1.

Thanks for any assistance.

Josh