[Moin-user] Unable to delete attachment

[MSulchan Darmawan]

Dear all,

Usually I can delete an attachment successfully, but recently I cannot
delete it anymore, the message is :

Please use the interactive user interface to use action AttachFile.del!

Since I didn't change anything on the server side and manage the server
by myself, then what should I do to trace the problem ? 

I use Ubuntu 8.04.4 and a very old moin version 1.5.8 :D
Thanks in advance.

-- 
Cheers,
[-Sulchan-]
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