I haven't had trouble extracting GPS data from most of my photos, but I can't figure out how to read some of them (& I can't access the data in other EXIF readers either, but I hope that doesn't mean it's not possible? 

Is there a way to do so? All were shot with an iPhone 4, if that's helpful. 
Currently I have been testing free demo — does the license version allow this?
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The only difference between the demo and the free version is that the demo only lets you export 5 images at a time.
My guess is that GPS was off or did not have good enough reception when some of the photos were taken.

Pierre Bernard
Houdah Software s.à r.l.
Houdah Software s. à r. l.

HoudahGeo: One-stop photo geocoding
HoudahSpot: Advanced file search utility
Tembo: Easy and effective file search
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