Xcode 8 Beta - Convert to Current Swift Syntax Failed: Could not find test host

Iam recieving an error message when I try to use Xcode 8's Convert Wizard.

After trying rebooting, downloading fresh code, and deleting my DerivedData files I cannot escape this error:

Convert to Current Swift Syntax Failed: Could not find test host

I have tried both options which are: Swift 2.3 and Swift 3. After I select a version I instantly get that error.

Here is a screenshot of the error: Xcode 8 Convert Error Message