"-I" command line parameter for GPUPerfStudioAnalyzer.exe seems to not work

I'm setting it in Shader Analyzer, in the compilation settings, in "Additional Custom Arguments". And I'm getting this error:

*************** Build Began for 1 Devices***************

X.hlsl(57,10-20): error X1507: failed to open source file: 'Y.hlsl'

And Y.hlsl is inside of the path specified in the commandline ("-I <path>).

Thanks!