Error cuCtxPopCurrent (cudaHashcat+64.exe)
autodetecting -n's is interesting feature though. we can specify something like --priority=1 or 9 so -n and gpuloops will be set according our needs.

for example,
on 9 — it will take all of gpu resources,
on 4-5 — we still can play or watch movies etc,
on 1 — it will take just some of the resources, so the video coolers will run slow and quiet.
This is so easy to do by hand.
Adding a flag that controls other flags is just plain silly.
You can launch oclhc/cudahc without any -n/loops, so it'll use default.
Oh, and this tool was designed for professionals, by a professional.