captcha not showing

[Caiapfas]

I have 4 images installed to 2 sites on the same server using the same templates. one is showing captcha one is not. how can i fix this issue.

the only diffrence is one site is in the root or the website , the other is in a subdir

[V@nо]

There is not enough information. Provide a link to the site in question if you can

[Caiapfas]

http://www.swmxpark.com/sharegallery/


also
http://www.swmxpark.com/sharegallery/phpinfo.php

[V@no]

It seems that your captcha.php file or possible other files were modified and were saved in UTF8/UTF16 encoding with BOM.
Either upload unmodified files to the server or save all files you've modified in ACSII encoding or UTF8/16 encoding without BOM (notepad and wordpad in XP/Vista save files in UTF/Unicode with BOM, so you should not use these editors)

[Caiapfas]

i downloaded all the files from the site that works and then uploaded them to the one that doesnt, no luck, still doesnt work

[V@no]

Ok, this is how your captcha image looks like inside:


Now, this how it should look like:


See these extra 3 bytes at the beginning? these are BOM indicator for text in UTF8 encoding. This means a file on your server is saved in UTF8 encoding with BOM and until you find that file and replace it with ASCII encoded your captcha won't work and nobody can help you.

Now that you know the cause, the problem is almost solved...just find the file

P.S. just trace your steps, what files have you edited?

P.P.S. I don't see much of modifications on your site, maybe you should update your 4images?