Update: Bug Fixes

When user tries to upload a photo to Photobucket, Photoscape hangs.
When user tries to save any photo to computer, Photoscape hangs.
When user clicks on Undo button in Crop tool, after cropping, the image has wrong dimensions.
When user clicks on Undo button in Effects tool, after applying an effect, the image becomes black.
When user clicks on Undo button in Resize tool, after resizing, the image becomes black.
When user clicks on Undo button in Exposure tool, after changing exposure, the image becomes black.
When user changes the resolution to 50% and re-saves the photo, the width and height field becomes correctly empty.
When user changes the resolution to 50% and changes the width and height field directly, the field becomes correctly set to the values entered.