Debugging not working on CF10 development box. IsDebugMode returns false despite being enabled...

I just did a fresh install to try to fix this but no joy. All settings show that request debugging should work. I've used CF for years and can't figure out why it doesn't work.  I didn't enable the "secure server" option either.  I'm not using the Eclipse line debugger.  Could there be some registry setting balling this up?

<cfif IsDebugMode()>

Debugging should be working...

  <cfelse>

Nope, Debugging is Disabled

</cfif>

Any help appreciated.