上传出错

more than likely eveyone who is having a problem here has been developing on their local computer, then are tryng to migrate their system to a remote server. When you do this, you are probably moving your setting for directory paths along as well.

For example the temp path for your images is probably different than the image temp path on your host system.

I recommend this test in Drupal 6.14.
goto /admin/settings/file-system

and look at your temporary directory... if its glaring red, then try renaming it to something like: /tmp.
if that does not work, try renaming to just tmp ( no forward slash)

Next step to test this will be to upload an image or file. I tested it by uploading a new logo.
But remember, that if you do a FULL DB dump from phpmyadmin from your local computer to the new host, you will probably see this problem again.