I had watermarking of large images working but I guess when I went live with the site it somehow broke. I went to tools->image handler and it said IH wasn't installed! I reinstalled it and set large watermarking to on but still no watermarks. Can someone give me a clue as to what is wrong?

Here's what my image config looks like:

Small Image Width 150
Small Image Height 80
Heading Image Width - Admin 57
Heading Image Height - Admin 40
Subcategory Image Width 100
Subcategory Image Height 57
Calculate Image Size true
Image Required true
Image - Shopping Cart Status 1
mage - Shopping Cart Width 50
Image - Shopping Cart Height 40
Category Icon Image Width - Product Info Pages 57
Category Icon Image Height - Product Info Pages 40
Top Subcategory Image Width 150
Top Subcategory Image Height 85
Product Info - Image Width 250
Product Info - Image Height 220
Product Info - Image Medium Suffix _MED
Product Info - Image Large Suffix _LRG
Product Info - Number of Additional Images per Row 3
Image - Product Listing Width 120
Image - Product Listing Height 100
Image - Product New Listing Width 100
Image - Product New Listing Height 80
Image - New Products Width 100
Image - New Products Height 80
Image - Featured Products Width 100
Image - Featured Products Height 80
Image - Product All Listing Width 100
Image - Product All Listing Height 80
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 I
H 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 no
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 yes
IH large image compression quality 85
IH large image maximum width 750
IH large image maximum height 550
IH watermark gravity Center
IH zoom gravity SouthEast