It IS adding another large image, but there has to be a "base" (AKA "default") image already there to begin with for it to work correctly. IH will create the small, medium, and large images based on this default image which is why you upload the largest image as your default. IF you want a different image for the large and medium images, then you upload these images AFTER you upload the base image. and niccol is right... this isn't IH that does this.. This is default ZEN CART image management behavior which IH does not try to modify, but it instead works WITH this default behavior..
BTW, we could have cleared this up sooner if you had posted the STEP BY STEP details of how you uploaded these images versus a summary of what you did.. Can't troubleshoot problems that we can't reproduce, and we can't reproduce issues with general high level steps.
"I uploaded a large image and got an error"
vs
"I took the following steps:
1. clicked on the new image button
2. I clicked the large image upload
3. I browsed my computer for an image and selected it
4. I clicked save
5. I got the following error..."
The second one would have allowed us to see what you see.. Make sense??
Perhaps the readme doesn't provide details on this process, but the interface does have this text:
Default image file
A default image must be defined. The default image is assumed to be the smallest when medium or large images are entered.
Bookmarks