Domino does not start after upgrade to R6.01

I had a R5.08 server running on Win2000 and wanted to upgrade it to R6.01.

I went thru the whole process as described in the IBM Redbooks.

However the server does not start. It crashes first time I started it raising NSD.

I got a few times the Error 0x143 as others mentioned in their post.

Now the error is gone after trying to start the server a few times.

Did anyone face the same problem? Any solution?

If you need more information, please let me know by answering the post.

Thanks in advance

Julien