Broken preview link

[DrByte]

Which "preview" button are you referring to? on the categories/prods listing or in the edit page ?
Have you made any changes to the /admin/includes/modules files/folders ?
What mods / addons / contributions do you have installed?

[Serge1889]

I'm talking about the preview button(s) on the edit product page.
I have made no changes to the admin/includes modules files/folders.
As for mods etc, I have the Product Info Display (right side), Zen lightbox, blank sidebox and the Login header mods etc installed.

[Ajeh]

Using phpMyAdmin ...

Could you peek in the products table ...

Do all products have master_categories_id values -- as in none are 0?

Can you peek in the products_to_categories table ... do all products have categories_id > 0?

Are you able to edit an existing product and click update?

[Serge1889]

I've checked both the master_categories_id values and the products_to_categories table and both are fine (ie no 0s anywhere).

Assuming you are asking whether I can edit a product using phpMyAdmin, the answer is yes.

[Serge1889]

I have narrowed the errors still further. It only occurs when I change the text style in the Product description window - eg to a Heading style. It appears to be fine changing the point size, using bold etc. Just this. Know where I should look?
Apologies for the inaccuracy of my earlier posts but I've been at this for hours.