Hello Nubuwat,
I had fix 2 of your attachments, it seems that the attachment files in /media/com_easydiscuss/attachments is not following the path format by easydiscuss.
You will have to rename all the attachment files according to the path stated in your database nr2af_discuss_attachments.
for example:
A'ina-Kamalat-Islam-Ruhani-Khazain-Volume-5-Page-548.gif
to the path name without the file extension ie remove the .gif:
85eada5040ce9b616a3474bb218440a9
and for the thumb nail would be the same path but with a prefix of _thumb also without file extantion:
85eada5040ce9b616a3474bb218440a9_thumb
Please do not hesitate if you need further assistance.
Screenshot -->
http://screencast.com/t/z58pjWq7
Thanks:)