Lansweeper webserver won't install

[Davosity]

Hi All,

Recently purchased Lansweeper and I am unable to get the webserver working with either the default (UltraDev cassini) or IIS 6.

Running on Windows 2003 r2 Server, I get the following error for default Install

Prerequisites installation status
Error: UltiDevCassini install.
Error: Error installing UltiDev.WebServer.msi the second time.

And when I choose IIS, my application pool stops... Event viewer shows the following series of errors

I don't have a preference for webservers; just want a working installation

Any assistance much appreciated

Cheers

David

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 31/10/2011
Time: 10:36:49 AM
User: N/A
Computer: VEATS2
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '2068'. The process exit code was '0xffffffff'.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 31/10/2011
Time: 10:36:49 AM
User: N/A
Computer: VEATS2
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '1656'. The process exit code was '0xffffffff'.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 31/10/2011
Time: 10:36:50 AM
User: N/A
Computer: VEATS2
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '3904'. The process exit code was '0xffffffff'.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 31/10/2011
Time: 10:36:51 AM
User: N/A
Computer: VEATS2
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '2752'. The process exit code was '0xffffffff'.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Warning
Event Source: W3SVC
Event Category: None
Event ID: 1009
Date: 31/10/2011
Time: 10:36:51 AM
User: N/A
Computer: VEATS2
Description:
A process serving application pool 'DefaultAppPool' terminated unexpectedly. The process id was '2336'. The process exit code was '0xffffffff'.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Error
Event Source: W3SVC
Event Category: None
Event ID: 1002
Date: 31/10/2011
Time: 10:36:51 AM
User: N/A
Computer: VEATS2
Description:
Application pool 'DefaultAppPool' is being automatically disabled due to a series of failures in the process(es) serving that application pool.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

[Hemoco]

Troubleshooting being done through email.