Hello, I am french, sorry for my english

I have a problem few seconds after execution.
Can you help me please

?
A part of Debug file :
22:00:52 Finished cleaning up old data from memory.
22:00:52 The volume has already been analyzed, using existing data.
22:00:52 Starting FileBoolean.
22:00:52 Calculating the maximum end of the gap.
22:00:52 Iteration 1: 0 unmovable clusters after 0, new ZoneBegin = 0
22:00:52 Maximum end of gap = 0
22:00:52 Analyse des suggestions du programme
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\CMD.EXE-034B0549.pf' because it is older than 30 days (2011/01/29 16:01:40)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\DEVCON.EXE-23160601.pf' because it is older than 30 days (2011/01/29 16:01:40)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\DPSFNSHR.EXE-06665439.pf' because it is older than 30 days (2011/01/29 16:01:45)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\EXPLORER.EXE-02121B1A.pf' because it is older than 30 days (2011/01/29 16:01:42)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\GRPCONV.EXE-375690AD.pf' because it is older than 30 days (2011/01/29 16:01:45)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\LSASS.EXE-306A65C3.pf' because it is older than 30 days (2011/01/29 16:01:32)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\MSCORSVW.EXE-310BC412.pf' because it is older than 30 days (2011/01/29 16:01:39)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\RUNDLL32.EXE-3E3C20E6.pf' because it is older than 30 days (2011/01/29 16:01:36)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\RUNDLL32.EXE-454F88AC.pf' because it is older than 30 days (2011/01/29 16:01:45)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\RUNDLL32.EXE-680FF70C.pf' because it is older than 30 days (2011/01/29 16:01:37)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\RUNONCE.EXE-01CA3A2F.pf' because it is older than 30 days (2011/01/29 16:01:45)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\SMLOGSVC.EXE-177864DC.pf' because it is older than 30 days (2011/01/29 16:01:27)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\SPOOLSV.EXE-3A613CE3.pf' because it is older than 30 days (2011/01/29 16:01:32)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\SVCHOST.EXE-2D5FBD18.pf' because it is older than 30 days (2011/01/29 16:01:37)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\UNREGMP2.EXE-0CFB0619.pf' because it is older than 30 days (2011/01/29 16:01:38)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\VERCLSID.EXE-28F52AD2.pf' because it is older than 30 days (2011/01/29 16:01:43)
22:00:52 Ignoring hintfile 'G:\WINDOWS\Prefetch\WINLOGON.EXE-0957F9B2.pf' because it is older than 30 days (2011/01/29 16:01:33)
22:00:52 Sorting the program hints
22:00:52 I have crashed in function 'DefragThread' in source '.\MyDefrag.cpp' on line 52.
Exception: ACCESS_VIOLATION (the memory could not be read or written)
Command line: "G:\Program Files\MyDefrag v4.3.1\MyDefrag.exe" -r "G:\Program Files\MyDefrag v4.3.1\Scripts\SystemDiskDaily.MyD"
Context is not locked.
1. At line 121 in 'd:\www.mydefrag.com\sources\lib\programhints.cpp'
2. At line 142 in 'd:\www.mydefrag.com\sources\lib\programhints.cpp'
3. At line 310 in 'd:\www.mydefrag.com\sources\lib\programhints.cpp'
4. At line 2485 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
5. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
6. At line 1267 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
7. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
8. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
9. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
10. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
11. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
12. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
13. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
14. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
15. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
16. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
17. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
18. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
19. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
20. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
21. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
22. At line 360 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
23. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
24. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
25. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
26. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
27. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
28. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
29. At line 43 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
30. At line 4766 in 'd:\www.mydefrag.com\sources\lib\interpret.cpp'
31. At line 590 in 'd:\www.mydefrag.com\sources\lib\execute.cpp'
32. At line 709 in 'd:\www.mydefrag.com\sources\lib\execute.cpp'
33. At line 916 in 'd:\www.mydefrag.com\sources\lib\execute.cpp'
34. At line 47 in 'd:\www.mydefrag.com\sources\mydefrag\mydefrag.cpp'
Trying to crash the other threads for debugging purposes....
22:00:53 Stopping....