Kernel Cache Error

I am installring Replistor 6.3 on Windows XP SP2. The prduct gets installed but give the error:

nable to open Kernel Cache (Global\RepliStorKernelCache).
Windows-text: 2 - The system cannot find the file specified.


Site=Ace-Support File=OCTO_SRV.CPP Line=12143 Revision=2.616.2.1
Severity=WARNING Error=0 Category=0 Process=Server
Time=11/5/2008 7:11:21 PM Millisec=828 MSG_READ
! ! ! WARNING ! ! ! Cannot Query Driver.
Windows-text: 2 - The system cannot find the file specified.

Description
The server process queried the kernel driver for its version number. This
returned an error, which indicates that the driver may not have started.

Resolution
1. Open the Devices window in Control Panel, and see if the driver
has been started. If not, start it.
2. If the system crashes at this point, reinstall the product, because you have the
incorrect version of the kernel driver.


Site=Ace-Support File=OCTO_SRV.CPP Line=12130 Revision=2.616.2.1
Severity=SEVERE Error=0 Category=0 Process=Server
Time=11/5/2008 7:11:21 PM Millisec=609 MSG_READ
! ! ! WARNING ! ! ! RepliStor Driver cannot be started.
Windows-text: 127 - The specified procedure could not be found.


Site=Ace-Support File=OCTO_SRV.CPP Line=3185 Revision=2.616.2.1
Severity=WARNING Error=0 Category=0 Process=Server
Time=11/5/2008 7:06:18 PM Millisec=718 MSG_READ
Registry error retrieving ProcessNameIgnoreAll.
Windows-text: 2 - The system cannot find the file specified.


Site=Ace-Support File=OCTO_SRV.CPP Line=4911 Revision=2.616.2.1
Severity=WARNING Error=0 Category=0 Process=Server
Time=11/5/2008 7:06:17 PM Millisec=546 MSG_READ
Cannot start mirroring.
Windows-text: 2 - The system cannot find the file specified.

Description
The process attempted to communicate to the kernel driver that the driver was
supposed to start mirroring and it did not respond.

Resolution
Call Technical Support.

I am not able to understand what kernel driver it needs and where do we get it?