Unfreed memory blocks: 0
(../../win32ss/user/ntuser/desktop.c:529) err: ptiLastInput is CLEARED!!
(../../win32ss/user/ntuser/msgqueue.c:2071) err: DereferenceObject pCursor
Assertion 'pFCB->OpenHandleCount == 0' failed at ../../drivers/filesystems/fastfat/fcb.c line 317

Entered debugger on embedded INT3 at 0x0008:0x8095a392.
kdb:> bt
Eip:
<NTOSKRNL.EXE:15a393 (:0 (DbgBreakPoint))>
Frames:
<fastfat.sys:87bb>
<fastfat.sys:1e48>
<fastfat.sys:1ed3>
<fastfat.sys:d6c6>
<fastfat.sys:db9f>
<NTOSKRNL.EXE:7b3c3 (ntoskrnl/io/iomgr/irp.c:1207 (IofCallDriver))>
<NTOSKRNL.EXE:6da90 (ntoskrnl/io/iomgr/file.c:1035 (IopDeleteFile))>
<NTOSKRNL.EXE:109515 (ntoskrnl/ob/oblife.c:211 (ObpDeleteObject))>
<NTOSKRNL.EXE:110093 (ntoskrnl/ob/obref.c:237 (ObfDereferenceObject))>
<NTOSKRNL.EXE:104879 (ntoskrnl/ob/obhandle.c:752 (ObpCloseHandleTableEntry))>
<NTOSKRNL.EXE:1061ac (ntoskrnl/ob/obhandle.c:1745 (ObpCloseHandle))>
<NTOSKRNL.EXE:1080d7 (ntoskrnl/ob/obhandle.c:3297 (NtClose))>
<NTOSKRNL.EXE:142bf5 (ntoskrnl/include/internal/arch/../i386/ke.h:689 (KiSystemServiceHandler))>
<NTOSKRNL.EXE:3d95 (:0 (KiFastCallEntry))>
<ntdll.dll:c7f1>
<KERNEL32.DLL:293f9>
<Firefox%20Setup%2033.0.exe:c417>
<Firefox%20Setup%2033.0.exe:c47e>
<Firefox%20Setup%2033.0.exe:c3ac>
<Firefox%20Setup%2033.0.exe:c47e>--- Press q to abort, any other key to continue ---