My 'larger image' is the same as thumbnail, help please.

Good Afternoon,

I have 60 downloadable images in a certain category, and am trying to list them, but am still on the first one because when I tested it, and clicked on 'larger image' on the site, the small thumbnail image pops up instead of the larger image.

In images, the images are called
ad_reiki_symb001.jpg

In the Medium folder, there is a subcategory called reikisymb and images are called
ad_reiki_symb001_MED.jpg

In the Large folder, there is also subcategory called reikisymb and images are called
ad_reiki_symb001_LRG.jpg

I FTPd the folders over into the relevant folders

I set the permissions to all image folders to 777, but for some reason, when I click on 'larger image' on the site, the small thumbnail image pops up instead of the larger image. All the file names match except for the _MED and _LRG at the end.

If when I create the item, I set the product image as the _LRG file, it comes up ok, but I think that might be wrong.

I have read the thread about preparing images, and cant work out what I have done wrong.

When I right click on the 'larger image' pop up, the properties say that the pic is from shop/images/ad_reiki_symb001.jpg, I thought that Zencart automatically picked up on the _MED and _LRG files, have I not done something?

Thanks in advance
Nikki

I have added the image from the LRG folder when doing the descriptions, as its the only way to get the thumbnails to work, I have only done a few, so If you think this may cause some conflictions, or know what the original problem was I would appreciate if someone could let me know.

Thanks again
Nikki