Invoke Node in AB_Source_VI.lvclass Error

[apalrd]

I seem to get this funny build error when I do a full build but not when I hit the Deploy button in Robot Main.vi

Here is the error I get:

An error occurred while saving the following file:

C:\Users\YOUR NAME HERE\Documents\LabVIEW Data\Buzz15\Robot Main.vi

Invoke Node in AB_Source_VI.lvclass:Close_Reference.vi->AB_Build.lvclass:Copy_Files.vi->AB_Application.lvclass:Copy_Files.vi->AB_Build.lvclass:Build.vi->AB_RTEXE.lvclass:Build.vi->AB_Engine_Build.vi->AB_Build_Invoke.vi->AB_Build_Invoke.vi.ProxyCaller
<APPEND>
Method Name: <b>Save:Target Instrument</b>

I have no idea where this error is coming from or what it means, searches on the NI site have turned up nothing.

I only use the Invoke Node during Autonomous, and have removed that code to see if it is the cause. It is not.