I actually saw the same icon earlier today when adding VIs using CIN
nodes with no associated .lsb file. I found the following blurb
about the blue icon in the LabVIEW help.
"LabVIEW cannot find the default editor for the item. For example, if the item is
a Microsoft Word document and Word is not installed on the computer, this icon
appears next to the item."
Are you getting this when you have the VI loaded in memory, or all the
time? If you don't want them there, you can remove them from the
dependencies category. This won't effect the VIs operation, but
you won't have the icons. Basically there is nothing wrong, as
you might have guessed since you can run the programs with no issue.
Hope this helps!
Andy F.
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National Instruments