No, these are simply temporary files LV uses while it's open. There are files where LV stores data related to a crash, but these aren't them. Information related to why a crash happened is saved in different places depending upon which version of LV you are using.Mike...PS: you can delete those files. All they are doing now is consuming disk space.
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This is for 6.1 but I suspect the information still applies: http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/54e361e3ff477ec186256c320068184f?OpenDocument