Commented Unassigned: Null ref exception when uninstalling EF 6.1-beta1 package to F# project [3560]

Repro steps:
1. create a new F# console application
2. install EF 6.1 prerelease package

Expected: works fine


Actual: null ref exception thrown after failed install


Installing 'EntityFramework 6.0.0-beta1'.
Successfully installed 'EntityFramework 6.0.0-beta1'.
Executing script file 'c:\school\ConsoleApplication3\packages\EntityFramework.6.0.0-beta1\tools\init.ps1'.
Adding 'EntityFramework 6.0.0-beta1' to ConsoleApplication3.
Successfully added 'EntityFramework 6.0.0-beta1' to ConsoleApplication3.
Executing script file 'c:\school\ConsoleApplication3\packages\EntityFramework.6.0.0-beta1\tools\install.ps1'.
Uninstalling 'EntityFramework 6.0.0-beta1'.
Successfully uninstalled 'EntityFramework 6.0.0-beta1'.
Install failed. Rolling back...
Object reference not set to an instance of an object.
Comments: note this seems to repro with nuget 2.6 as well.