Could not create index writer

Error messages similar to the following may appear in the tomcat/logs/cascade.log file:

Could not create index writer:
org.apache.lucene.store.LockObtainFailedException:
Lock obtain timed out:
@/usr/local/Cascade_Server/tomcat/indexes/write.lock

To correct this problem, the following steps should be taken:

1. Stop Cascade CMS.
2. Remove the file write.lock from the location specified in the error message.
3. Start Cascade CMS.