Kernel Density error but does not actually tell me what the error is

Discussion created by dena123 on Jan 29, 2013
Hi. I am trying to use the Kernel Density tool to show global biodiversity hotspots. Every time I try to run it I get an error message, but within the message all it says regarding the error is: KernelDensity [000000_12301899]

What does this mean? How do I get this tool to work? Is there a problem with the way my data are organized?