Horia,
Your image solved for me with index 4207-07. Here are my ansvr settings:
I agree with @entilza that it is a good idea to check your index files to confirm you have the the 4207 series. Have you confirmed that your image scale is correct in SGP (2.12 arcsec/pixel)? You could also try the ansvr settings downsample = 2 and objects = 100 to see if that helps.
Andy