Explorer crashes when executing a file after r20494.

When I click on an executable (for example, the Abiword installer), explorer
crashes. Trace:

(lib/setupapi/queue.c:1459) copy error 2 L"C:\\ReactOS\\inf
usbhub.sys" ->
L"C:\\ReactOS\\System32\\drivers
usbhub.sys"
(lib/shell32/shlview.c:1529) LVN_KEYDOWN key=0x00000009
(lib/shell32/shlview.c:1529) LVN_KEYDOWN key=0x00000009
Entered debugger on embedded INT3 at 0x0008:0x800b16d0.
kdb:> set condition * first always
kdb:> cont
(lib/shell32/shlview.c:1529) LVN_KEYDOWN key=0x0000004b
(./lib/advapi32/service/scm.c:1378) ScmrOpenServiceW() failed (Error 1060)
(./subsys/win32k/ntuser/timer.c:157) Unable to locate timer in message queue
(lib/ntdll/ldr/utils.c:1190) LdrGetExportByName(): failed to find ILFindLastID
(lib/shell32/shlexec.c:1249) flags ignored: 0x0000000c
Entered debugger on first-chance exception number 14 (Page Fault)
Memory at 0x00000000 could not be read: Page not present.
kdb:> bt
ESC[7h^EEip:
<ntdll.dll:2796d (lib/string/i386/tcslen.h:15 (wcslen))>
Frames:
<shell32.dll:267b1 (lib/shell32/shlexec.c:138 (SHELL_ArgifyW))>
<shell32.dll:2900f (lib/shell32/shlexec.c:1321 (SHELL_execute))>
<shell32.dll:299d4 (lib/shell32/shlexec.c:1556 (ShellExecuteExA))>
<shell32.dll:306ce (lib/shell32/shlview.c:908 (ShellView_OpenSelectedItems))>
<shell32.dll:31214 (lib/shell32/shlview.c:1283 (ShellView_OnNotify))>
<shell32.dll:31ce8 (lib/shell32/shlview.c:1592 (ShellView_WndProc))>
<user32.dll:52608 (lib/user32/windows/message.c:953 (IntCallWindowProcW))>
<user32.dll:53305 (lib/user32/windows/message.c:1418 (SendMessageW))>
<comctl32.dll:1d98d (lib/comctl32/listview.c:764 (notify_hdr))>
<comctl32.dll:1da6a (lib/comctl32/listview.c:816 (notify_listview))>
<comctl32.dll:1da3b (lib/comctl32/listview.c:834 (notify_click))>
<comctl32.dll:2b011 (lib/comctl32/listview.c:8153 (LISTVIEW_LButtonDblClk))>
<comctl32.dll:2dc04 (lib/comctl32/listview.c:9431 (LISTVIEW_WindowProc))>
<user32.dll:52657 (lib/user32/windows/message.c:962 (IntCallWindowProcW))>
<user32.dll:5297c (lib/user32/windows/message.c:1097 (DispatchMessageW))>
<explorer.exe:54060 (subsys/system/explorer/utility/window.cpp:631
(_ZN6Window11MessageLoopEv))>
<explorer.exe:63851 (subsys/system/explorer/explorer.cpp:0 ())>
<explorer.exe:64362 (subsys/system/explorer/explorer.cpp:1118 (wWinMain))>
<explorer.exe:639f9 (subsys/system/explorer/explorer.cpp:0 ())>
<explorer.exe:116a>
<explorer.exe:1038>
<KERNEL32.dll:299f2 (./lib/kernel32/process/create.c:68 (BaseProcessStartup))>
<00000000>
kdb:>