Fix for IE6 FRP crash

src/plugin/PluginClass.cpp

 #include "PluginStdAfx.h"
 
 #include "PluginClass.h"
 #include "PluginSettings.h"
 #include "PluginSystem.h"
 #ifdef SUPPORT_FILTER
 #include "PluginFilter.h"
 #endif
 #include "PluginMimeFilterClient.h"
 #include "PluginClient.h"
@@ skipping 795 matching lines @@
   if (bBHO)
   {
     if (!CreateStatusBarPane())
     {
       return false;
     }
   }
 
   if (CPluginClient::GetInstance()->IsFirstRun())
   {   
-    CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)CPluginClass::FirstRunThread, NULL, NULL, NULL);
+    // IE6 can't be accessed from another thread, execute in current thread
+    if (CPluginClient::GetInstance()->GetIEVersion() < 7)
+    {
+      FirstRunThread();
+    }
+    else
+    {
+      CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)CPluginClass::FirstRunThread, NULL, NULL, NULL);
+    }
     if ((m_hPaneWnd == NULL) || (!IsStatusBarEnabled()))
     {
       ShowStatusBar();
     }
 
   }
   return true;
 }
 
 bool CPluginClass::CreateStatusBarPane()
@@ skipping 1082 matching lines @@
         }
       }
     }
 
     hTabWnd = ::GetWindow(hTabWnd, GW_HWNDNEXT);
   }
 
   return hTabWnd;
 
 }