Thanks for your suggestion, Ajeh.
Yes I had tried the Classic template, but I just double checked and the results were the same. All categories work fine in FF, but in IE 6 and 7 I have the same issues.
I've hunted through the forums and have noted that some people with similar issues found that changes that the Google Sitemaps add-on had made to the database caused the problem. I ran the patch you mentioned (see below) in one of the topics, but it made no difference in my case.
INSERT INTO configuration VALUES ('', 'Product option type Select', 'PRODUCTS_OPTIONS_TYPE_SELECT', '0', 'The number representing the Select type of product option.', 0, NULL, '2007-03-19 17:57:39', '2007-03-19 17:57:39', NULL, NULL);
INSERT INTO configuration VALUES ('', 'Upload prefix', 'UPLOAD_PREFIX', 'upload_', 'Prefix used to differentiate between upload options and other options', 0, NULL, '2007-03-19 17:57:39', '2007-03-19 17:57:39', NULL, NULL);
INSERT INTO configuration VALUES ('', 'Text prefix', 'TEXT_PREFIX', 'txt_', 'Prefix used to differentiate between text option values and other option values', 0, NULL, '2007-03-19 17:57:39', '2007-03-19 17:57:39', NULL, NULL);
INSERT INTO configuration VALUES ('', 'Image Handler Version', 'IH_VERSION', '2.0', 'This is used by image handler to check if the database is up to date with uploaded image handler files.', 0, 100, NULL, '2007-06-06 16:47:03', NULL, 'zen_cfg_textarea_small(');
I'll answer the questions you've asked others and see if that helps you to help me :)
Switch to Classic Template ... does it work?
--- No.
What add-ons are you using?
--- List below:
Improved attributes controller
Cross Sell
Debug error logging utility
Dymo label printer
Easy Signup and Login
Easy Populate
Google Sitemaps
Google Analytics
Shopping cart with button
Tabbed Products Pro
Zen Lightbox
What version of Zen Cart?
---1.3.8a
Database patch level: 1.3.8
Clean install or an Upgrade?
---Clean install
How did you install?
---Directly from the Go-Daddy account console.
How did you upgrade?
---N/A
Has this ever worked for you?
---Yes, I'm sure the fact that both problems disappear when I choose to "buy" the product for for which I created totally new attributes, should give me a clue to the cause of the problem but my skills are lacking in this area.
My site is here - http://lakinplates.com
This is an example of a product for which the problems occur - http://lakinplates.com/index.php?main_page=product_info&cPath=44_1_3_24&products_id=28
This is the new product which works fine - http://lakinplates.com/index.php?main_page=product_info&cPath=8_80&products_id=68
I hope you can make sense of all this, Ajeh. I appreciate your time and knowledge.
Kind regards
Philip