Whenever I try to use a custom probe, such as a Waveform graph, I get a dialog saying "failed to load or ceate probe". This behaviour started after I installed LabVIEW 8.2, I really miss those probes.
Have you tried to repair the LabVIEW 8.2 installation? It sounds like this might just be an installation corruption issue. Custom probes work fine for me in 8.2.