Error 1380 occurred at Invoke Node in AB_EXE.lvclass:Build.vi->AB_Engine_Build.vi->AB_Build_Invoke.vi->AB_Build_Invoke.vi.ProxyCaller
LabVIEW: (Hex 0x564) License checkout failure. Unable to checkout the requested license feature because the license is invalid or does not exist.
Method Name: Build:Application
I had the above error pop up while compiling a small program. I had sucessfully complied this program on an earlier version. The only piece I added was code to close the VI after execution. Specifically Open VI reference, Invoke Node with FP.Close Method, and Close Reference. Now I get the error.
When you say "earlier version" are you referring to an earlier LabVIEW version, or an earlier time? Have you verified the licenses with the NI License Manager for your current version of LabVIEW? The application builder has a separate license from LabVIEW.