SmarCrop doesn't always create images the proper dimensions

I've been experimenting with smartcrop and I've noticed that it isn't always creating images the proper dimensions. I've got a preset that is 62x62. If I use the standard ImageCache scale-and-crop the images are always 62x62, but with SC some images are 61x61 and seemingly randomly. The incorrectly scaled ones are larger than 62x62 so it's not an upscaling issue. Attached is an image that incorrectly scales to 61x61.