A couple of snips to use when you need to downgrade a project using the Package Manager Console.

NuGetPackageManagerDowngradePackage

$projects = Get-Project -All | Select @{ Name="ProjectName";Expression={$_.ProjectName}}, @{Name="Has";Expression={Get-Package Insight.Database -ProjectName $_.ProjectName}} | where { $_.Has -ne 'Insight.Database 1.1.5' }

$projects | select { Uninstall-Package Insight.Database -ProjectName $_.ProjectName -Force }

$projects | select { Install-Package Insight.Database -Version 1.1.4 -ProjectName $_.ProjectName }