This must have been posted 100 times already, but I see people coming back to the same problem time and time again. Notice the 80 in the below Configuration -> Images, this setting needs to be the same all across, it can be changed to something different but it has to be CONSISTENT for IH2 to work.
You don't need to set both dimensions, one is enough, you can choose either width or height.
You control your hover via the Product Info dimension, that is not the same as 80 in below page, you can set it to whatever you want but it cannot be larger than your largest image (IH2 does not enlarge images).
If your IH2 does not work, make sure all files are in correct location, that they are not corrupt from bad FTP transfers, and that there are no javascript conflicts.
Easy way to avoid them is to move the javascripts that IH2 places in your template_default to your custom template, make sure it is active.
Make sure IH2 is installed. Admin -> Tools -> Image Handler2 -> Admin.
Set permissions in your images and bmz_cache folder to 777.
Look for tophand's jscript_imagehover.js and replace with that one.
That's IH2 troubleshooting in a nutshell.
Small Image Width 80
Small Image Height
Heading Image Width - Admin 57
Heading Image Height - Admin
Subcategory Image Width 80
Subcategory Image Height
Calculate Image Size true
Image Required true
Image - Shopping Cart Status 1
Image - Shopping Cart Width 50
Image - Shopping Cart Height
Category Icon Image Width - Product Info Pages 57
Category Icon Image Height - Product Info Pages 40
Top Subcategory Image Width 80
Top Subcategory Image Height
Product Info - Image Width 150
Product Info - Image Height
Product Info - Image Medium Suffix _MED
Product Info - Image Large Suffix _LRG
Product Info - Number of Additional Images per Row 1
Image - Product Listing Width 80
Image - Product Listing Height
Image - Product New Listing Width 80
Image - Product New Listing Height
Image - New Products Width 80
Image - New Products Height
Image - Featured Products Width 80
Image - Featured Products Height
Image - Product All Listing Width 80
Image - Product All Listing Height
Product Image - No Image Status 1
Product Image - No Image picture no_picture.gif
Image - Use Proportional Images on Products and Categories 1
IH resize images yes
IH small image filetype no_change
IH small image background 255:255:255
IH watermark small images no
IH zoom small images yes
IH small image hotzone no
IH small image compression quality 85
IH medium image filetype no_change
IH medium image background 255:255:255
IH watermark medium images no
IH zoom medium images yes
IH medium image hotzone no
IH medium image compression quality 85
IH large image filetype no_change
IH large image background 255:255:255
IH watermark large images no
IH large image compression quality 85
IH large image maximum width 600
IH large image maximum height
IH watermark gravity Center
IH zoom gravity SouthEast
These settings can be changed at will, I put them here just to give you an idea of what works.[IMG]http://www.example.com/ladywig/Kr3$th@ven3124/images/small_zen_logo.gif[/IMG]