ok further testing..it seems that the reason is that the image that im trying to upload is of a resolution of 5616x3744 (24)bit its only a 1166kb jpg file (was a photo taken for a product from a pro photographer and has lots of white in the photo hence small file size).
my file upload will resize the image to 400pixels wide if i can remember. I have tested it with larger file sizes and with resolutions of around 2000x1333 and that works - so the problem is that the issue is to do with very large resolutions (im guessing).
any thoughts on suggestions on getting this resolved?
