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And what does

ini_get('upload_tmp_dir')

exactly return? Really the directory being used for file uploads?

Yes I am. This directory is already used by this PHP engine to upload 
files for other applications and write sessions files.
Yes, it does :)
Once this part of the code tagged as a comment, the attachment form 
appears in the composing window et attachments DOES work.

The only note in the PHP documentation about is_writable and Windows 
says that it incorrectly returns writable - the exact opposite of what 
you describe. Are you *sure* the directory is really writable (i.e., 
do attachments _work_ now?), and that is_writable is the culprit?

Hi,

I've proceeded to the installation of Horde 3.0.5 + Imp 4.0.3 under 
WS2003 + IIS 6.0 + PHP 4.3.11 (CGI mode) and found an error concerning 
attachment when composing a new message. No upload form / attachment 
area was shown in the pop-up composing window.



Upload directive and writing in temp dir were fine.



When looking in the /lib/Horde/Browser.php file, I saw a call to 
is_writable() function (in allowFileUploads() around lines 795 to 
798). Under Windows this function doesn't tell wether the directory is 
writable or not (cf. php documentation).



As a quick (and very ugly) fix I commented this section :

if (($dir = ini_get('upload_tmp_dir')) &&

                 !is_writable($dir)) {

                 return 0;

and the attachment area came back in my browser :)



Hope this will help.



Regards,

Fabrice