I have upgraded OC v1.5.3.1 from 1.5.1.2 with vQmod installed and following mods active:
Ajax Enable Disable Product
Orders & Comments At-a-Glance. Allows you to preview the order details from the list view
Remove Shipping and Handling from Affiliate Commission
Add Product Cost
Addressbook
Ajax Edit Quantity Admin
Cache Manager
Carousel Auto Scroll Loop
Change stock color
E-Piksel Admin Shortcuts Menu Lite
E-Piksel Custom My Account and Affiliates Page
Invoice to PDF
Know Your Product
@tik Yes to newsletter
Opencart Mobile Framework [Lite]
Opencart Mobile Framework
OCA_Cart Popup(v1.5.2 - v1.5.3.1)
Order featured by sort order
Print Shipping Address Label (Extended)
resend_confirm_email
VQMod Manager Menu Shortcut
Display a Warning Message to IE6 Users
Best-Byte Customer Account Greeting
Very simple AJAX live search
Multi Image Uploader for Products
Best-Byte Tell a Friend Footer Link
VQMod Skip Step 1 Checkout
VQMod Skip Step 1 Checkout
yukari
Since a few days I started to modify products quantities and their options. This is an apparel store so the only options for now are SIZE and COLOR. I have started adding sizes and colors to each product. After I modified half of products, I returned back to a product to make corrections to a size and found that the option values listboxes were empty!
In the customer part, everything seems fine as the available sizes and colors are visible, just when I go back to admin area trying to modify a size or a color, I can't see where is the item which I need to modify because I can't see where is the Color > Black or the Color > Blue because in the list they look all same with first listbox being empty.
Please look also at screenshot.
Any idea guys ?
Thanks in advance for your help!
UPDATE : I have read almost anything possible through different forums and many were suggesting to reinstall modules, because of upgrade from 1.5.1.2 to 1.5.3.1 and modules were incompatible. This didn't help too. And in the error logs of system (vQmod error log is empty, before used to show any error but I have found and fixed the vQmods with troubles) shows just these (repeatedly):
yyyy-MM-dd HH:MM:SS - PHP Warning: Invalid argument supplied for foreach() in /.../catalog/controller/common/column_left.php on line 49
yyyy-MM-dd HH:MM:SS - PHP Warning: Invalid argument supplied for foreach() in /.../catalog/controller/common/column_right.php on line 49
yyyy-MM-dd HH:MM:SS - PHP Warning: Invalid argument supplied for foreach() in /.../catalog/controller/common/content_top.php on line 49
yyyy-MM-dd HH:MM:SS - PHP Warning: Invalid argument supplied for foreach() in /.../catalog/controller/common/content_bottom.php on line 49
...
yyyy-MM-dd HH:MM:SS - PHP Notice: Undefined variable: product_info in /...vqmod/vqcache/vq2-catalog_controller_product_product.php on line 517
For privacy reasons I have removed the full path and date/time relationships, I think they're irrelevant to my case.
I have also tried to COMPLETELY disable all mods of vQmod and still the same...
Please help

UDPATE -------------------------
I solved it with the great help of "yadav771" who pointed me to a vQmod fix on http://www.opencart.com/index.php?route ... er_search=
And after modifying a little bit the XML itself because on my installation, when adding a product option like SIZE or COLOR was showing twice the option list, but so far seems the things are working...