I am able to add categories successfully, but not articles, after hitting submit it returns the to the usual page without any new articles/pages.
When at pages / articles, and hit "submit" it proceeds to load then returns to the initial state with no new pages/articles updated.

When I click "manage files" I am getting this error:

Notice: Constant CONFIG_UPLOAD_VALID_EXTS already defined in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php on line 78

Warning: Cannot modify header information - headers already sent by (output started at /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php:78) in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/function.base.php on line 245

Warning: Cannot modify header information - headers already sent by (output started at /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php:78) in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/function.base.php on line 246

Warning: Cannot modify header information - headers already sent by (output started at /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php:78) in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/function.base.php on line 247

Warning: Cannot modify header information - headers already sent by (output started at /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php:78) in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/function.base.php on line 248

Warning: Cannot modify header information - headers already sent by (output started at /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php:78) in /home/supercar/public_html/zenphoto/zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/function.base.php on line 249

Current Folder Path:
../../../../../uploaded/

If you require my details to login and check it out (only a test site and I'm not sharing passwords etc) let me know. I am happy to debug with your assistance too.

please delete line 78 in zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/inc/config.base.php

Sorry, I can't reproduce that problem with the latest nightly.

Okay so I deleted:
Line 78 which was define etc etc and re-uploaded it.

This fixed the "managed file" issue, there is no more error being displayed but I still can't submit articles.

Do you want my login details to have a look? It's only a test website and I don't share passwords

What we would prefer is for you to load the nightly build and see if you still have the problem with it.

Okay downloaded the nightly build from:
http://www.zenphoto.org/files/nightly/

It still isn't adding pages / articles.