I get a blank page when I navigate to the manufacturer page and click on the button "Show all manufacturer products". I did a clean install of virtuemart 2.0.26d, Joomla 2.5.19 and XAMPP 3.2.1
Is there some one else who has the same issue. I made one product and one manufacturer without a category. When I assign the product to the manufacturer I would suggest that the product would be visible when I navigate to the manufacturer category page, but it's empty. I also looked at the category page view and I wonder how the products are loaded for the manufacturer?
index.php?option=com_virtuemart&view=category&virtuemart_manufacturer_id=1
Poeh, it seems like things go wrong when you havn't enabled sef in joomla. Very strange. But when sef is enabled I have the problem described in topic http://forum.virtuemart.net/index.php?topic=116277.msg418904#msg418904
I think the manufacturer pages could use some attention in virtuemart;) They are not very SEO friendly and usable.
We worked on this, just this weekend.