Attachments mess after converting from vB 4.1.8

[kwilyan]

I tried to convert my board from 4.1.8 to SMF 2.0.1.

All work flawlessly, except one thing. It messes my attachment.

Example with this thread:
http://www.gm-marka.web.id/showthread.php?t=1908 [nofollow] (original)
http://www.gm-marka.web.id/smf/index.php?topic=1908.0 [nofollow] (converted)

http://www.gm-marka.web.id/showthread.php?t=1861 [nofollow] (original)
http://www.gm-marka.web.id/smf/index.php?topic=1861.0 [nofollow] (converted)

How can I resolve this?