Can't install v3 or remove v2.5

I've had v2.5 installed and used for some time. Today having not using for a while, running 2.5 asked me to upgrade to v3. I dowloaded install and ran it but it freezes at the 'validating install' part of wizard. Tried again (after hafing to end task and end msiexe process) still freezes. Via Control panel I've tried to remove 2.5 (and repair) also freezes. So basically I'm stuck. Any suggestions? Are there any shortcuts to removing this application so I can try a clean v3 install... short of some very long-winded editing of registry? I'm using XP Pro SP2.

Thanks

The reason the update didn't work is very likely caused by some error on your system or antivirus product that prevents Microsoft Installer from proceeding. There is a cleanup tool from Microsoft which you can use to remove SmartFTP 2.5 from your system. It is available from:
http://download.microsoft.com/download/ ... sicuu2.exe

More information about the cleanup tool can be found here:
http://support.microsoft.com/kb/290301/en-us

Regards,
Mat