Thanks for reminding me - I got distracted by something shiny.
In normal mode, it ran for about eight seconds (17 iterations of the data packet) before locking up.
Run as Administrator, it ran for 9 iterations before locking up.
I'm going to try something here, running in compatibility mode for XPSP3. Still appears to lock up, although the window never changes to "Not Responding". After about 30 seconds, it registered my "stop" push. When I tried to "Start" again, it locked up hard (still, again, not showing 'not responding').
<DataHP1>RMT<#9>STATUS<#9><#9><#9>0<#9><#9><#9><#9>AFRRCS<#9><#9><#9>0<#9>1<#9>0<#9>AFRRCS<#9><#9>0<#9>0<#9>0<#9>2133</HP1Data>
<DataHP1>RMT<#9>STATUS<#9><#9><#9>0<#9><#9><#9><#9>AFRRCS<#9><#9><#9>0<#9>1<#9>0<#9>AFRRCS<#9><#9>0<#9>0<#9>0<#9>2133</HP1Data>
<DataHP1>RMT<#9>STATUS<#9><#9><#9>0<#9><#9><#9><#9>Limestone<#32>Ridge<#9><#9><#9>0<#9>1<#9>0<#9>AFRRCS<#9><#9>0<#9>0<#9>0<#9>3151</HP1Data>
<DataHP1></HP1Data>