Hi @rtga , thanks for reporting this issue. We’ve had a few of these reports recently. I might have a development version of invest that fixes this. Do you mind trying this installation: https://storage.googleapis.com/natcap-dev-build-artifacts/invest/davemfish/3.9.1.post12%2Bg3d0f2e1f/InVEST_davemfish3.9.1.post12%2Bg3d0f2e1f_x64_Setup.exe
Please let us know if it solves the problem.
Alternatively, it might be possible to edit your PATH environment variable to get things working, as described in this thread:
But I don’t necessarily recommend that approach.