Miredot seems to run fine (no errors are printed) but the target/miredot folder does not exist or is empty.
Make sure your java classes are not in the default package.
Check whether you've overridden the default output location of Miredot. If so, the output is written to that location and not to the default target/miredot folder.
If you are using Maven, set the jvm file encoding to UTF-8. You can do this as follows (on the command line):
set MAVEN_OPTS=%MAVEN_OPTS% -Dfile.encoding="UTF-8"
export MAVEN_OPTS="$MAVEN_OPTS -Dfile.encoding="UTF-8""