Can you try to change the entry for your camera in camconst.json from
{ // Quality C
"make_model": "Canon PowerShot SX150 IS",
"raw_crop": [ 26, 10, 4364, 3254 ] // cut 2pix left and right
},
to
{ // Quality C
"make_model": "Canon PowerShot SX150 IS",
"dcraw_matrix": [ 13481,-4867,-1063,-2074,9960,2472,-170,1474,3894 ],
"raw_crop": [ 26, 10, 4364, 3254 ] // cut 2pix left and right
},
please?