I'm getting it too. Just installed Image Handler 2, it worked fine, I was able to bang around in the shop to both categories and products, now it says (on all pages):
1054 Unknown column 'c.parent_id' in 'on clause'
in:
[SELECT c.categories_id as id, c.parent_id, cd.categories_name as cName, cd2.categories_name as pName FROM categories c, categories_description cd LEFT JOIN categories_description cd2 ON c.parent_id=cd2.categories_id AND cd2.language_id='1' WHERE c.categories_id=cd.categories_id AND cd.language_id='1']
I have the following in Product Listing:
Display Product Image 1
Display Product Manufacturer Name 0
Display Product Model 0
Display Product Name 2
Display Product Price/Add to Cart 3
Display Product Quantity 0
Display Product Weight 0
Display Product Price/Add to Cart Column Width 125
Display Category/Manufacturer Filter (0=off; 1=on) 1
Prev/Next Split Page Navigation (1-top, 2-bottom, 3-both) 3
Display Product Listing Default Sort Order
Display Product Add to Cart Button (0=off; 1=on) 1
Display Multiple Products Qty Box Status and Set Button Location 3
Any ideas? I'm going to remove Image Handler, since that was the last thing I did before this happened (before that was Ultimate SEO).
Thanks!