Problems with Set Version from 4.1.4.5 to 4.2.1.8

Hi All,

I created a database in version 4.1.4.5 using a backup file which is version 4.1.4.3. The create database worked fine with no errors. Now I am trying to convert this database using set version to 4.2.1.8 and I am getting the following errors:-

Setting version for database testDB INOAAI0445 Jan 12, 2007 6:05:46 PM
4.2.1.8(811) on Windows INODSA1002 Jan 12, 2007 6:05:47 PM
database ‘testDB’ at structure level for version 4.1.4 INODSI1417 Jan 12, 2007 6:05:47 PM
Tamino server 4.1.4.5 on Windows INODSA1002 Jan 12, 2007 6:05:50 PM
Default tokenizer ‘white space-separated’ INOXHI8265 Jan 12, 2007 6:06:09 PM
Using “d25http014” as host name for directory service entries INODSI2018 Jan 12, 2007 6:06:11 PM
Initializing journal space INODSI1016 Jan 12, 2007 6:06:21 PM
Server session 117 started INODSI1452 Jan 12, 2007 6:07:39 PM
Tamino server successfully started INODSI1636 Jan 12, 2007 6:07:39 PM
Received response 14 (148) while stopping server INODSE2170 Jan 12, 2007 6:08:05 PM
Internal error - unexpected response occurred in call to function dsif_stop_server, function gave response code(s) 14/148 INOXME8543 Jan 12, 2007 6:08:05 PM
Terminated with errors INODSF1436 Jan 12, 2007 6:08:12 PM
Set database version failed INOAAE0402 Jan 12, 2007 6:08:13 PM

I have installed all hotfixes for 4.2.1.8 as well as 4.1.4.5( hotfix 523 currently)

Please help