I had Geosetter already installed but removed it, did a thorough cleanup and renistalled. I still get the same problems: if I run EXIFTool in EXIFToolGUI, I simply get the 'EXIFTool has stopped working' error message.
If I run GeoSetter, I get numerous 'EXIFTool has stopped working' messages (looks like one per image in the selected folder) but them EXIF data shows up and GeoSetter appears to do its job despite the occasional extra 'EXIFTool has stopped working' message.
Very odd.
If it's any use, here is a copy of the WER file.