Hi Guy,
After speaking with Brady and John on this issue there appears to be a problem with the deletion of NXT resource files during a mass compile. Apparently force compiling the VIs solves the issue, but this is extremely painful and can't be considered a valid workaround.
Our suggestion: uninstall and reinstall the toolkit, then mass compile for 8.2.1. R&D is looking at this to see what's going on, so I can assure you we're working to resolve the issue for all NXT-related products in the future.
Let me know if you have any further questions/comments/concerns. Cheers.
| Michael K | Project Manager | LabVIEW R&D | National Instruments |