Index: src/ch/register.cpp
===================================================================
diff -u -N -rd2b121c78f510b5384b8ef0ca80afbfd7f77fef7 -rd0fdcc905035e648382256101a3d99f429af6d56
--- src/ch/register.cpp	(.../register.cpp)	(revision d2b121c78f510b5384b8ef0ca80afbfd7f77fef7)
+++ src/ch/register.cpp	(.../register.cpp)	(revision d0fdcc905035e648382256101a3d99f429af6d56)
@@ -29,7 +29,7 @@
 	// first try - load dll and register it manually.
 	HRESULT hResult = S_OK;
 	// if failed - try by loading extension manually (would fail on vista when running as user)
-	hResult = CoInitialize(NULL);
+	hResult = CoInitializeEx(NULL, COINIT_MULTITHREADED);
 	if(SUCCEEDED(hResult))
 	{
 		HRESULT (STDAPICALLTYPE *pfn)(void);