If you're still here.... then maybe clean the scanner glass, make sure you have some 'black backing', let scanner warm up (do two or three scans, and use the last one, ensure you select the correct corners accurately. You can zoom in on the results, to check the selected areas (white squares) are not picking up the black borders of the individual squares - make sure target is printed the correct size helps, but not essential, afaik, but make sure all the inbuilt printer profiling stuff is turned off. If you get a high light variance, it may work better if you reverse the positions of the targets, or possibly try a different scanner. Of course, the printer may not be printing properly - blocked jets, whatever. Did it actually attempt to produce a profile?

Best wishes,

Ray

PS - hope you never saved the image as a gif

pps there are two targets you can print - one bright - try the other target - it depends where the 120 'X's are.