Created Unassigned: System.IO.FileNotFoundException: Could not load file [19985]

I've built a script using the AutoSPInstallerGUI in order to build a development platform. Whilst debugging it I've been using Notepad ++ as it's quicker to find the appropriate tags in the xml.

The script runs fine until after three of the databases had been created at which point the script crashed with a user exception error. This simply turned out to be a missing password for the search application, however since then it's crashed with the following error and I've been unable to find a solution to it. Please could someone help:

Here's the error:

System.IO.FileNotFoundException: Could not load file
or assembly 'Microsoft.IIS.PowerShell.Framework' or
one of its dependencies. The system cannot find the
file specified. File name: 'Microsoft.IIS.PowerShell.Framework'
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName
fileName, String codeBase, Evidence assemblySecurity,
RuntimeAssembly locationHint, StackCrawlMark&stackMark,
IntPtr pPrivHostBinder, Boolean throwOnFileNotFound,
Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.LoadWithPartial
NameInternal(AssemblyName an, Evidence securityEvidence,
StackCrawlMark& stackMark) at
Microsoft.IIs.PowerShell.Framework.Interop.IAppHo
stElement.get_Properties()
at Microsoft.IIs.PowerShell.Framework.ConfigurationElement.get_Attributes()
at Microsoft.IIs.PowerShell.Framework.ConfigurationElement.ToPSObject(ConfigurationElement parent)
at Microsoft.IIs.PowerShell.Framework.ConfigurationElement.ToPSObject(ConfigurationElement parent)
at Microsoft.IIs.PowerShell.Framework.ConfigurationElement.ToPSObject(ConfigurationElement parent)
at Microsoft.IIs.PowerShell.Provider.GetWebsiteCommand.WriteSite(ConfigurationInfo o)
at Microsoft.IIs.PowerShell.Framework.Configuration.XPathQueryToStream(String query, PipelineStreamWriter
writer) at System.Management.Automation.CommandProcessor.ProcessRecord()

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the
registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to

1. Note: There is some performance penalty associated
with assembly bind failure logging.
To turn this feature off, remove the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog].

targetObject :
CategoryInfo : NotSpecified: (:) [Get-Website], FileNotFoundException
fullyQualifiedErrorId : System.IO.FileNotFoundException,Microsoft.IIs.PowerShel
l.Provider.GetWebsiteCommand
errorDetails :
vocationInfo : System.Management.Automation.InvocationInfo
riptStackTrace : at ConfigureFarm, C:\AutoSPInstaller\SP\AutoSPInstaller
\AutoSPInstallerFunctions.ps1: line 1480
at Setup-Farm, C:\AutoSPInstaller\SP\AutoSPInstaller\Au
toSPInstallerMain.ps1: line 185
at <ScriptBlock>, C:\AutoSPInstaller\SP\AutoSPInstaller
\AutoSPInstallerMain.ps1: line 358
at <ScriptBlock>, <No file>: line 1

Thanks