I am attempting to install a new CMS 6r2 site (framework version 6.2.267.1, cms version 6.1.379.0) through the episerver deployment center. I select the option to Install site and SQL Server database (no modules selected), but receive the following main error: Error - You cannot call a method on a null-valued expression.

The additional information contains:

productPath: C:\Program Files (x86)\EPiServer\Framework\6.2.267.1\
installedVersion: 6.2.267.1
frameworkVersion: 6.2.267.1
Skipping web config modification of EPiServer Framework (6.0.318.113 < 6.2.267.
1)
Skipping web config modification of EPiServer Framework (6.1.79.0 < 6.2.267.1)
Skipping web config modification of EPiServer Framework (6.2.267.1 < 6.2.267.1)

An unhandled error has occured:
You cannot call a method on a null-valued expression.
When executing

At C:\Program Files (x86)\EPiServer\Framework\6.2.267.1\Install\System Scripts\
Install Site (SqlServer).ps1:182 char:143
+ 		$frameworkConfigPath = Join-Path $properties.Site.SitePath $webConfigDoc.Se
lectSingleNode("/configuration/episerver.framework").GetAttribute <<<< ("config
Source")

True
=
Get-EPiIsBulkInstalling
An error has occured and the transaction will be rolled back
Rolledback

An unhandled error has occured:
You cannot call a method on a null-valued expression.
When executing

At C:\Program Files (x86)\EPiServer\Framework\6.2.267.1\Install\System Scripts\
Install Site (SqlServer).ps1:182 char:143
+ 		$frameworkConfigPath = Join-Path $properties.Site.SitePath $webConfigDoc.Se
lectSingleNode("/configuration/episerver.framework").GetAttribute <<<< ("config
Source")

True
=
Get-EPiIsBulkInstalling

An unhandled error has occured:
You cannot call a method on a null-valued expression.
When executing

At C:\Program Files (x86)\EPiServer\Framework\6.2.267.1\Install\System Scripts\
Install Site (SqlServer).ps1:182 char:143
+ 		$frameworkConfigPath = Join-Path $properties.Site.SitePath $webConfigDoc.Se
lectSingleNode("/configuration/episerver.framework").GetAttribute <<<< ("config
Source")

=
Get-EPiIsBulkInstalling

At C:\Program Files (x86)\EPiServer\Framework\6.2.267.1\Install\System Scripts\Install Site (SqlServer).ps1:182 char:143
+ 		$frameworkConfigPath = Join-Path $properties.Site.SitePath $webConfigDoc.SelectSingleNode("/configuration/episerver.framework").GetAttribute <<<< ("configSource")
System.Management.Automation.ParentContainsErrorRecordException: You cannot call a method on a null-valued expression.

Anyone run into this error before? Other solutions I see involve upgrading sites, or removing spaces from the sitename (neither affect me).