Fix: Mac: PTGui may hang at startup on some systems (dock icon keeps bouncing)
Fix: GPSImageDirection EXIF tag in stitched output had the wrong data type. This caused it to be not recognized by some applications.
Fix: Mac: if image filenames were passed on the command line, each image would be opened twice in PTGui.
Fix: in the panorama editor the checkerboard pattern could be visible at the right hand side of the panorama.