From your description I would say that you have done something you should not be doing.
PC = Personal Computer ? Windows 10?
"Can't write" => are you sure that you installed the plugin in a directory where you are allowed to write ?
"missing settings.bin" => could be the same problem.
There is another potential problem that may be involved: do you have any special characters, meaning not a-z & A-Z in the path to your user profile ?