(SASS) How to automate *.scss to *.css conversion?

Question

css

There was a problem, the search did not bring results, I hope they will help here.
After I add the code to the *.scss file, the code is not converted to *.css, I have to delete the *.css file, and then re-enter --watch in the console, a new *.css is created and everything is fine.
What is the problem? How to automate compilation process from *.scss to *.css (@charset "utf-8" available in .scss file)?
SASS Build in the editor gives the following error:
[Decode error - output not utf-8]
Errno::EACCES: Permission denied - C:\Users\╤хЁухш
Use --trace for backtrace.
There was another problem after I enter compass watch , it gives an error:
LoadError on line [“55”] of C: cannot load such file — wdm Run with --trace to see the full backtrace
I tried reinstalling sass and compass but didn't work.
What could be the problem?

Answer 1

try to compile using compass - compass-style.org - there are installation instructions

Answer 2

error due to Cyrillic on the way.
under win try koala.