[webmin-l] Perl execution failed? (composite folders)

[RC <rub...@ya...>]

re: new composite folders in usermin 1.110 (read mail module)

To reproduce:

With a newly created test user:
1. Click read mail > manage folders
2. Create composite folder
3. Add subfolders: drafts, sent mail
4. Click save button
5. Go back to read mail index
6. In drop down at top of screen, select the composite folder you
just created, and click the change button to change to it.

result:
--
HTTP/1.0 500 Perl execution failed Server: MiniServ/0.01 Date: Tue,
8 Feb 2005 19:33:00 GMT Content-type: text/html Connection: close
Error - Perl execution failed

Modification of non-creatable array value attempted, subscript -1 at
boxes-lib.pl line 40.
--
# line 40 of boxes-lib.pl is: seek(MAIL, $index[$i]->[0], 0);

Usermin 1.110 & webmin 1.180 on FreeBSD 4.10

Workaround:
1. Create the draft & sent mail folders first. (either send a new
mail and save a draft, or create the folders yourself making sure
you apply the proper permissions)
2. Now that /home/testuser/mail/drafts &
/home/testuser/mail/sentmail exist, you can make a composite folder
out of them.

Maybe I'm misunderstanding or having something misconfigured, but:
1. Why is it possible to make a composite folder of drafts &
sentmail, which by default, don't exist?
2. How do you turn off the ability to create composite folders?

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