Failure: The full-text indexes on the Microsoft Dynamics CRM database are not consistent with Microsoft Dynamics CRM 3.0 full-text indexes

Last week I had a chance to help a London company to upgrade CRM 3.0 to 4.0. As you can see there are some warnings and error, I can easily fix all warnings instead of ignore them(in fact, most warnings are safe to ignored). The error is an interesting one, regarding Microsoft KB(927226), it’s a custom indexes error, when I check the installation log, it tells me the table name: DocumentIndex



C:\Documents and Settings\user\Application Data\Microsoft\Mscrm\Logs\crm40svrsetup.log
13:51:00| Info| The following full-text indexes are not consistent with Microsoft Dynamics CRM 3.0 full-text indexes:
13:51:00| Info| tableowner: dbo
13:51:00| Info| tablename: documentindex
13:51:00| Info| fulltextkeyindexname: cndx_primarykey_documentindex
13:51:00| Error| remark: modified full-text index
13:51:00| Error|
13:51:00| Error| The full-text indexes on the Microsoft Dynamics CRM database are not consistent with Microsoft Dynamics CRM 3.0 full-text indexes.
13:51:00| Error| Check SqlFullTextIndexValidator : Failure: The full-text indexes on the Microsoft Dynamics CRM database are not consistent with Microsoft Dynamics CRM 3.0 full-text indexes.

I saw another post here which has the same error message. However I found that my case is slightly different, in fact I can’t see any full-text catalog against this table. So I just create a new ftcat_documentindex against DocumentIndex table(after compare with my VPC), then the error gone. :)
 
The full-text catalog is call: ftcat_documentindex, see below: