Attachments - PNG thumbnails work, JPEGs do not

[icebane]

I'm having a hard time figuring out what went wrong with my forum.

I can't pinpoint when or why, but jpeg thumbnails are no longer showing up when inserted inline or as an attached file.

PNGs continue to work fine.

JPEGs don't show the thumbnail but you can click and the lightbox works!

Here is a thread I created with a variety of tests. You'll see the last is a PNG screenshot of our GD settings in phpinfo.

http://forums.spiders.us/showthread.php?t=7723

I've tried and double checked...

• Attachment Permissions
• Cookie domain
• User group permissions
• Folder permissions

Does anyone have any ideas? Given our picture focused community, this has been a serious headache for me

[tbworld]

Sorry, went to take a look but your site tells me the thread does not exist.

[dirknerkle]

You're not alone. Everything has been working fine on my site but then about two weeks ago, JPGs no longer displayed thumbnails while PNGs work fine. Now JPGs only display as a link.

I fail to believe it's a cookie issue as nothing has changed with that since last April. I've tried all the updates/refreshes suggested but nada.

Using vbulletin 4.2.1

Here's a link to an example (you may have to register to see it):

http://diychristmas.org/vb1/showthre...=7160#post7160

[tbworld]

This may be obvious, but I wanted to make sure we covered the basics.

This is still a problem when you disable your hooks?

I know it is a 'DUH' question....

[dirknerkle]

I'm sorry, I'm not following you -- "disable your hooks" ? Do you mean turn off the extensions?

[tbworld]

Quoted from @Lynne for sake of clarity:

If you think the problem is a plugin, then disable your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit includes/config.php and add this line right under <?php

    
      define('DISABLE_HOOKS', true);  
   

-----------------------------------------
You can also do this in your admincp.

AdminCP -> Settings -> Options -> Plugin/Hook System -> Enable Plugin/Hook System

__________________

[ozzy47]

Since you have access to the ACP you can also do this:

ACP --> Settings --> Options --> Plugin/Hook System, set the option, Enable Plugin/Hook System to NO

[dirknerkle]

Okay. The only plugin I had was TapaTalk, and that's disabled. The enable Plugin/hook system is set to NO. There are lines through the names of all the plugins on the Plugin manager page.

I ran another test and no change. Is it necessary to have a height and width setting for the size of JPG files? PNG is set to zero, as are all the other graphical file types. PNG works...

[tbworld]

Thanks Ozzy... I really need shortcuts to this kind of stuff.

[Lynne]

So you are having issues with thumbnails. What version of PHP are you currently using? This is a symptom of a vB4 site upgraded to PHP5.4.