Permission problem

When resizing, what option are you selecting.
There should be 3 options,
1) select a size; which let's you convert to a preset size. ie 96x96, or 1024x768, or a few others.
2)scale, in which the image gets scaled up or down by a percentage.
3) custom size. where you can resize based upon your own whims

The thing that tends to happen is that if you don't select the proper action, it goes with the default, which it #1.
And if you don't make a selection of a preset size offered in the dropdown it gives it errors since you caot resize to nothing.

.
Does that make sense.