Download here the Error Cluster Constant that was demonstrated at NI Week 2011.
When you get the .zip file, unzip the files into this location:
The files should appear directly in that directory, not in any subdirectory. If the file is unzipped anywhere else, you may have trouble with LV being unable to find missing files.
You can then open this VI:
to see the error cluster constant in several configurations.
To drop this constant on your own diagrams, select "VI from disk..." in the palettes and pick the "Error Constant.xnode" file. You can also edit your palette set to include this file.
Looks very useful. A few suggestions: