Version 9.1.1.1 or 10?

[EdPaBo]

Hello,

I'm trying to use Refprop from Matlab(R2022b) via Python (3.10) but there's a point which is not clear to me.
I refer to this page to setup the wrapper for Refprop 10.

Everyting works fine up to the RP.RPVersion() command, there I get:

>>RP.RPVersion()

      ans = 
      Python str with no properties.
      9.1111

Now, if I chek the DLL version when I open Repfrop I get version 10

While if I check the refrop.exe file version I find File version 9.1.0.0 and version 9.01

Do I have to install the upgrade that I can find on Refprop homepage or do I already have the right version?

I suspect that the former is the right answer but I was told by data@nist.gov that the important version number was the DLL version number although I didn't specify exactly what I wanted to do but just if there was any kind of update available.

[ianhbell]

You have two versions of REFPROP installed on your machine evidently. Make sure the RPPREFIX environment variable points to the installation of REFPROP 10.0