The steps to reproduce the problem are as follows:
1) set up clean drupal install on Linux (HostGator)
2) install cck 6.x-2.6
3) install filefield 6.x-3.3
4) goto Home › Administer › Content management > Content types › Page > manage fields
5) add new field: Type "File" and Widget "Fileupload" label and field_label "file"
6) save
7) in global settings on the next page set "Number of values: " to "unlimited", clear permitted upload file extensions
8) save
9) goto Home › Create content > Page
10) You now see to fields for files
11) uploading 20K JPG generates this error:
An HTTP error 0 occurred. /?q=filefield/progress/d8cedd14812e39e321244661d97a6501
12) uploading 200-600K GIF & PNG files does not generate an error.

Comments

itvision’s picture

Status: Postponed » Active

Tried the following PHP.ini changes:
- doubling memory_limit from 64M to 128M
- post_max_size & upload_max_filesize are 64M

Tested in Firefox 3.6.3, IE 8

UPDATE: Thinking that FileField doesn't care about content type, so this may be a coincidence. I had originally experienced the error with imagefield which did limit to png/gif/jpg. Although I've been experiencing the issue for a couple days, was able to upload a previously attempted JPG this morning after a couple errors.

Looks like I might be experiencing other HTTP communication issues that perhaps could cause the problem. Will postpone for now until I have a chance for more testing.

itvision’s picture

Status: Active » Postponed
ausber’s picture

Status: Active » Postponed

I had the same problem, but i just installed the http://drupal.org/project/jquery_form_update, and it didn't have any more problems. You need the Jsalter module as well. ;)

quicksketch’s picture

Status: Postponed » Closed (cannot reproduce)

Closing after lack of activity. See the general troubleshooting issue here for various solutions: #297035: HTTP error 0 .