FMU dll not found

I am trying to run a hello-world fmu by importing into a simulink model.

I can load the FMU into the FMU block and it gets the inputs and outputs correctly:

Then when I try and run the simulation I get this error:

Error in supplied FMU: Unable to load dynamic library 'C:\Users\jeffy\Documents\FLE\Sandbox\FMUTesting\slprj\_fmu\e15072005f8629a8def2ffec2d706186\PythonSlave\binaries\win64\PythonSlave.dll': The specified module could not be found.

That dll definitely exists and it is definitely a 64-bit dll

Answer 1

[Jefferson Romney]

Turns out it was the python core dll that PythonSlave.dll calls. I hadn't restarted matlab after adding the python path to my system environment so Matlab didn't know where to find the underlying python dll.