BlockMesh is not recognized

I installed Butterfly 0.0.05, blueCFD-Core 2020-1, with Rhino 6, 6.34.21034.07001.
I got the error as shown below when I run blockMesh. Anyone could give a help?

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Just solved the problem by re-installing another lower version of blueCFD (2017-2 ).
Hopefully this can help people with the same problem.


Thank you so much! It finally worked!

Thank you for making the time to post the solution. You saved me a lot of time.