error 40 building installer in labview 2015

I'm trying to compile an application in a LabVIEW 2015 SP1 project and I get the following error report during the installer build:
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Click the link below to visit the Application Builder support page. Use the following information as a reference:


CDK_Build_Invoke.vi.ProxyCaller >> CDK_Build_Invoke.vi >> CDK_Engine_Main.vi >> IB_MSI.lvclass:Build.vi >> IB_MSI.lvclass:Engine_BuildDevPart.vi >> CDK_Engine_AddFiles.vi >> NI_MDF.lvlib:MDFBuildDevPart_AddFile.vi
C:\Active\Development\LabVIEW stuff\Electron Gun Controller\LabVIEW\Issue 1\Default files

The following errors and warnings were recorded during the build:

Error:
Internal error.
Code:
-40

Error:
Internal installer builder component error.
Details:
An invalid destination path, "", was specified for the file "Electron Gun.ini" located in "C:\Active\Development\LabVIEW stuff\Electron Gun Controller\LabVIEW\Issue 1\Default files".
Additional details:
Error adding file: C:\Active\Development\LabVIEW stuff\Electron Gun Controller\LabVIEW\Issue 1\Default files\Electron Gun.ini
Code:
-33
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I recently updated my (fully updated Win 8 based) LabVIEW 2015 using "LABVIEW 2015 SP1 PLATFORM DVD SET, WINDOWS 10/8/7/VISTA/XP/SERVER,ENGLISH" P/N 501510AK-00
Prior to the update my compilation completed successfully, now it fails every time. I've made some changes to the code, but I can't see why they would cause this failure.

Now the application build completes successfully, but the installer build fails. I've tried reloading LabVIEW and also restarted my PC, all to no avail.
The file referred to exists in the stated location path. I tried inserting an explicit destination for the ini file in the installer build propoerties but it made no difference, and I can't see any other way of changing its destination path. The ini file is generated for internal use by LabVIEW so I don't expect to have to give it a destination.

The nearest I can find to my problem exists in Knowledge base report "Why Do I Get Error 40, Error 21, or Error 12 When Building a Distribution Using LabVIEW, LabWindows™/CVI™ or Teststand?" last updated on 27/01/2015, but the solution it offers is for LabVIEW 2011, not 2015. I did try the suggested solutions (replacing NI manifest xml files) but they both failed. Other related links don't seem to apply to my LabVIEW version or problem.
Attempting a compilation with an older version of LabVIEW fails as the project is defined using a newer version.

I searched the forum but the hits on "error 40 building installer" don't seem appropriate and are for older LabVIEW versions. One suggested a mass compile but I'm not sure which libraries to recompile.

Has anyone else had this problem? If so is there a fix or should I generate a service request?

Thanks in anticipation,
Tom