I am currently using the exercise titled Supervised Land Cover Classification Exercise 1
After I have created the individual band sets using the pre-processing tool, the next step in the exercise (see link above) requires to stack the bands together using the band set icon in SCP. My bands 2-7 were in the band set definition box, (in tandem with the above exercise) but when I click to 'create raster of band set (stack bands)' and run it (in band set icon of SCP plugin), I get a completely pitch black Bstack_raster.tif image. I have tried changing the color style under the properties table but it still remains pitch black. I have tried backtracking to see any mistake but as far as I can see I have followed the correct procedure in the exercise.