Sorry for my English

Windows 8.1 32-bit Professional
When I've tried to inspect certain system process thread (PID=4), the ProcessHacker hangs up on loading stack (Loading stack windows on top)

Thread detail:
3052, , , ntoskrnl.exe!SeCreateClientSecurityFromSubjectContextEx+0x88c7, -4

This is due to the break down of APC that is entered on queue for execution the mentioned thread and this lead to latency in KeWaitForSingleObject (function KphCaptureStackBackTraceThread(), KProcessHacker\thread.c).

Try check copy dbghelp.dll (DLL.zip) for Win81 and retest again. See ./DLL.zip/DLL/readme.txt for details.