Can't edit or save existing product

[mcpacific]

I'm trying to make changes to an existing product, such as adding images. I'm able to upload the image without error, and when I press "Save" it looks like it saves properly, but there is not green "success" indicator. When I re-open the product the image is not there. I tried changing the description and it doesn't save either. It seems that something is preventing me from editing an existing product in any way.

Here is what the system.log shows:

cPanel X

2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Warning: array_key_exists() expects parameter 2 to be array, null given  in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 507
2015-09-18T15:39:01+00:00 ERR (3): Recoverable Error: Argument 1 passed to Varien_Object::addData() must be of the type array, null given, called in /home/username/public_html/app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php on line 513 and defined  in /home/username/public_html/includes/src/__default.php on line 1019
2015-09-18T15:39:01+00:00 ERR (3): Warning: Invalid argument supplied for foreach()  in /home/username/public_html/includes/src/__default.php on line 1021

[iweb_p3mbo]

What is the code you are using to add the images to the product?

[mcpacific]

I'm just going to the Admin Panel (backend), then Catalog > Manage Products > [Select Product] > Images.

Really it's not limited to just images... it's any edit made to the product can't be saved. I click the Save button, its twirls for a second... but no green success notice and no change to the product when I pull it up again.

[iweb_p3mbo]

Hi,

This is obviously not normal behaviour in Magento...

I would suggest that its going to be related to some extension you have installed; and would suggest that you setup a development site and disabled all extensions ; then test it.. hopefully it will work at this point. If so; re-enable them one by one and keep testing until you find your problem extension.

If it's not an extension; then you'll have to get your hands dirty (or hire someone too) by stepping through the core code (start in the ProductController) and checking what is going on.