[Native_C_Library + ViveSR_InitialModule(ID_PASSTHROUGH): -1]

Hi,

I have spent hours trying to use SRworks but when launching the project "sample-vs2015" inside "SRWorks_v0.9.7.1_Native_C_Library" folder I got "res = ViveSR_InitialModule(ID_PASSTHROUGH): -1".
and SteamVR did not run, too.

(1)SteamVR 1.19.7
(2)SRWorks 0.9.7.1
(3)SRWorks_v0.9.7.1_Native_C_Library
(4)VC++ 2019

I have tried so many solutions I don't know what to do anymore.

Thank you in advance for your help