It appears that a windows`10 foldername-variable (probably %users%) is not read correctly by the install:
After this install error - only OK is an option - the install concludes and as it is a manual the routine can not find it really shouldn't matter. But a test-render failed due to some module not being found.
The filename.mp4 is the name of the file it should render ro. Is another windows 10 variable also not read correctly?