I stopped a bunch of traces from the WWWebserver, changed their stats to 480 samples to try to speed refreshes up, and when I click on "Resume Trace" I get:

/*
if (PingPlotter.TargetCount > 0) then
set TraceTarget = PingPlotter.Targets(0)
else
TraceTarget = GetNewTarget
end if
elseif Variable("formaction") = "Resume Trace" then
---- Error:Access violation at address 005DF8D7 in module 'PingPlotter.exe'. Read of address 0000032C, Row: 315, Col: 5----
TraceTarget.Start
--^--
elseif Variable("formaction") = "Stop Trace" then
TraceTarget.Stop

*/

[Though it does seem to have restarted the traces...]