Yes same error here. Somehow our flight log got corrupted in our E-Bee and we were not able to geotag the images in the Sensefly software after the fact by connectin the drone and using the flight manager then processing the survey in Pix4D Mapper as per usual. I would be OK with just an un-referenced stitched up photo mosaic in this particular case however when i process the photos only 30 are included in the results. Seems the program wasn’t able to match the rest. I tried processing using the time stamp, thinking it would be able to find the neighbouring images and locate the tie points that way but neither approach works. Basically, if the images are not geotagged and there are no recognizable landmarks, processing doesn’t work.