cfexecute weirdness

I ran across an interesting "quirk" using CFexecute today... When I run this code: <cfexecute name="c:\windows\system32\tree.com" arguments="/?" variable="bar" /> <cfdump var="#bar#" /> ...I get the error that "variable 'bar' is undefined". ...however if I use the "outputfile" attribute instead of "variable", I do indeed get the results I want. After some discussion on the BACFUG list, it seems that the "timeout" attribute is required: <cfexecute name="c:\windows\system32\tree.com" arguments="/?" timeout="20" variable="bar" /> ...but if I don't include it, CF will happily compile and run the code, even if it's not able to populate my variable properly. :)