It only works for me this way ...
I use the boot of the 3617, I start the system, I enter by http, load the DSM of the 3617 and it gives the error, now.
I use the boot of the 3615, I start the system, I enter through htto, I load the DSM 3615 and it loads it perfectly. I go in, create pools, share ...
I don't know, there is something strange lol