The generated file names when using the tiling option has an extra dot (.)
For example,
My_Cloud_0_0..laz
My_Cloud_0_1..laz
My_Cloud_0_2..laz
My_Cloud_0_3..laz
Also, you've limited the tiling to 16*16. Is there a reason for this? I often want to tile very large clouds so I end up tiling the tiles. I personally don't see a need to go over 99, but 255 should cover every conceivable scenario.
I think 16 x 16 was only to limit the number of generated files (and it was more than enough to solve the issue one user had at the time I did this). I've increased it to 100 x 100 (which already correspond to 10 000 files!).