ArrayFire "Failed to load dynamic library" on Windows

HI!

I'm trying to enable ArrayFire with Julia on older machine with CPU backend, so I'm making it "simple" for ArrayFire to choose by setting ENV JULIA_ARRAYFIRE_BACKEND=CPU.

It's not working still...

`julia> using ArrayFire
ERROR: InitError: ArrayFire Error (501) : Failed to load dynamic library.
Error in af_err __cdecl unified::setBackend(af_backend)
In file src\api\unified\symbol_manager.cpp:245: Failed to load dynamic library. See http://www.arrayfire.com/docs/unifiedbackend.htm for instructions to set up environment for Unified backend.
0# af_is_real in af
1# af_is_real in af
2# 0x000000002D59CF3E`

What can I try to solve this?

If I don't set the backend to CPU, the error is

`ERROR: InitError: ArrayFire Error (501) : Failed to load dynamic library.
Error in af_err __cdecl af_init(void)
In file src\api\unified\device.cpp:47: ArrayFire couldn't locate any backends.
0# af_is_real in af
1# af_is_real in af
2# 0x000000002D60CF71
`