Error when trying to build Run-Time application in Labview

We are trying to build the Run-Time application but we continue to get an error.
The following VI is locked with a password.
AB_Engine_Disconnect_Typedefs.vi
This Vi contains the Vi that we need to change to Edit Mode, as it is currently in Read Only.
The Vi needed to change to Edit Mode (As per the text in the error) is named below.
AB_Source_VI.lvclass:Copy_SourceItem.vi

Are we looking in the right place, or doing something wrong? If the former, how do we change the Vi to Edit Mode?

My best guess is that this is a licensing problem. You might try running the NI License Manager and make sure everything is activated with the Serial Number you were given in your Kit of Parts.

Those “AB_” VIs are within the Application Builder - not something you could or would want to edit. The App Builder may be failing due to unlicensed NI Vision or something, but not giving you very good error information.