Install error during install of Exchange 2010 sp2 , on windows 2008 R2

HI,

Am working on a windows 2008 standard R2 install, with Exchange 2010 R2 trial for now ,

But got the below error during install of the mailbox role,i did all pre requisites, and setup test looked fine besides the warning that i am installing both ad and exchange on 1 server

Mailbox Role
Failed

Error:
The following error was generated when "$error.Clear();
            $InstallerScriptFileName = 'Scripts\ManageScheduledTask.ps1'
            $OneCopyScriptFileName = 'Scripts\CheckDatabaseRedundancy.ps1'
            $PsInstallerScriptPath = Join-Path $RoleInstallPath $InstallerScriptFileName
            $PsOneCopyScriptPath = Join-Path $RoleInstallPath $OneCopyScriptFileName
            
            & $PsInstallerScriptPath -RunFromSetup -Install -DeleteExisting -ServerName $RoleNetBIOSName -TaskName "Database One Copy Alert" -PsScriptPath $PsOneCopyScriptPath -PsScriptArgs "-MonitoringContext -ShowDetailedErrors -ErrorAction:Continue" -Verbose
        " was run: "[ManageScheduledTask.ps1] Could not find script: '\\H2080935\C$\Program Files\Microsoft\Exchange Server\V14\Scripts\CheckDatabaseRedundancy.ps1'.".

[ManageScheduledTask.ps1] Could not find script: '\\H2080935\C$\Program Files\Microsoft\Exchange Server\V14\Scripts\CheckDatabaseRedundancy.ps1'.
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.2.247.1&e=ms.exch.err.Ex88D115&l=0&cl=cp

The link is a nice touch from Microsoft, that shows no info, just a option to go here, so i am asking here 

If anyone can help me, and tell whats wrong here, please let me know !

A de Jong Microsoft Systems Engineer (2003) Mcsa + messaging (2003)