WordPress 2.5: Image upload problems

Guest Post by Richard

I wish I had a magic bullet for the image upload problems people are having, but I don’t. What I do have is a few suggestions that have worked for others, but not everyone.

  1. Go to the Adobe website and download and install the latest version of Adobe Flash in your browser. Even if you think you have the latest version, do it anyway. Adobe Flash 9 is on like, r115! [Edit: You can check to see if you are using the latest version of Flash by going here.]
  2. Clear your browser cache, start a post and try the upload. If you get any blank screens, right click on them and select reload to force reload them.
  3. Try a different browser. If you are on Windows and using IE, then try Firefox, or the other way around. If you are on Mac and using Firefox, try using Safari 3.1 (10.4.11 and later). I’ve had good luck so far with Safari.
  4. If you are on Linux, according to staff there is a bug in the Adobe Flash plugin for Linux, and since that is under the control of Adobe, WordPress cannot do anything about it. Hopefully Adobe will get it fixed real soon.

I don’t know if any, or all of these things will help you, but at this time it is all I have to offer you.

Related posts:
Uploading and inserting image with the new WordPress.com

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12 thoughts on “WordPress 2.5: Image upload problems

  1. It used to be when you uploaded a photo (640×480 let’s say) you could then rezise the photo in the body of the post to fit the design of the post. Now the only choices are Large medium and thumbnail. This doesn’t feel like progress for users, more like standardization for WP??

    • It used to be when you uploaded a photo (640×480 let’s say) you could then rezise the photo in the body of the post to fit the design of the post. Now the only choices are Large medium and thumbnail.

      How many size options you get when you’re about to insert an image depends on the size of the original images in relation to the defaults for those options. You set those defaults in Settings > Media so the size choices you have are self defined. If your main column width is 640 px, you could set the default width for the medium option to about half of that, and the default for the thumbnail option to whatever you prefer. Then you can set the default heights to 0 so that they’ll have no effect because usually only the width matters.
      For maximum image width by theme see here: http://wpbtips.wordpress.com/2009/07/23/maximum-image-width/

  2. Im running Leopard on a Mac, image uploader didn’t work for either Firefox or Safari. Installed the no flash uploader plugin stated above, and all seems good.

  3. Pingback: Wordpress 2.5 upload problem… | Hur vi kan bli rika tillsammans!

  4. Raincoaster, Have your co-blogger try selecting the visual editor, then saving and going to the editor and reloading the page. If it doesn’t show up, repeat this a couple times, switching to the code and saving, then switching to the visual and saving. I had two people who contacted me by my contact form that was able to get it to show up by doing that a couple times.

    IE is iffy, and Firefox less so, but still a bit iffy in spots.

    By the way, is the blog on .com or is it self-hosted? There have been some pretty enterprising users over at the .org forums that have “fixed” some things with minor code hacks and I’m almost thinking this was one of the things posted.

  5. On my shared independent WP blog, my co-blogger cannot even see the Media Upload buttons! They simply are not there. She’s writing everything in code and using Photobucket for now, but that’s hardly satisfactory. She’s running IE7, updated Flash, cleared cache, forced reload, the whole thing. Nothing seems to change.

  6. @sage,

    What you are going to want to do is search at http://wordpress.org/support/ and I would suggest the following searches:

    1. Fatal error: Call to undefined function wp_constrain_dimensions()

    2. undefined function wp_constrain_dimensions()

    3. wp_constrain_dimensions()

    4. wp-admin/includes/image.php on line 173

    5. image.php

    It could very well be that you are going to have to edit and modify the image.php file. There is also the possibility that there has been a fix posted that you can just upload to your public_html/wp-admin/includes/ directory.

  7. I have played with the htacess file, installed the latest Flash and followed all of your instructions to the letter. ‘ STILL i get this error message:
    Fatal error: Call to undefined function wp_constrain_dimensions() in /home2/newyorka/public_html/wp-admin/includes/image.php on line 173
    It doesn’t matter which photo I choose or what size it is. No success

  8. Heh, your avatar problem is so strange.

    Everything hopefully will go smoothly for you Ian. Just make sure you have the latest flash, and make sure that you clear your cache. And it could be that by the time you get around to another post or uploading images, staff will have the major kinks ironed out. They’ve been identifying problems and pushing out fixes ever since the upgrade.

  9. I haven’t posted since this upgrade started… Sure hope I don’t have to jump through all those hoops just to upload a photo!

    But since it has been nearly five months since I switched avatars, and STILL the old one keeps popping up all the time, I don’t hold out much hope.

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