GULP LESS Imports not working in gulp-less npm - npm

Question

Having used Gulp all the time for 2 last years, I've suddenly got a problem with the less file imports and just can not resolve it.
I've tried more then 5 combinations, such as from SmashingMagazine, from gulp-less homepage, etc... none worked for me.
The problem is (error log in console output):
C:\wamp\www\lumenframe>gulp less
[10:23:25] Using gulpfile C:\wamp\www\lumenframe\Gulpfile.js
[10:23:25] Starting 'less'...
Potentially unhandled rejection [2] '/bower_components/animate.css/animate.css' wasn't found. Tried - /bower_components/animate.css/animate.c
ss,bower_components\bootstrap\less\bower_components\animate.css\animate.css,bower_components\animate.css\bower_components\animate.css\animate
.css,bower_components\font-awesome\less\bower_components\animate.css\animate.css in file C:\wamp\www\lumenframe\bower_components\assets\l
ess\appstrap.less line no. 43
Gulpfile.js looks like this:
// Init Gulp
var gulp = require('gulp');
// Dependencies
var less = require('gulp-less'),
concat = require('gulp-concat'),
rename = require('gulp-rename'),
uglify = require('gulp-uglify'),
autoprefixer = require('gulp-uglify');
// Folder paths
var jsdir = './bower_components/assets/js/',
jspub = './public/assets/js/',
lessdir = './bower_components/assets/less/',
lesspub = './public/assets/css/';
// LESS compiler
gulp.task('less', function () {
return gulp.src(lessdir + 'frontend.less')
.pipe(less({
compress: true,
paths: [
'./bower_components/bootstrap/less/',
'./bower_components/animate.css/',
'./bower_components/font-awesome/less/'
]
}))
.pipe(autoprefixer('last 10 versions', 'ie 9'))
.pipe(gulp.dest(lesspub));
});
// Concatenate and Minify JS
gulp.task('scripts', function () {
return gulp.src(jsdir + '*.js')
.pipe(concat('appstrap.js'))
.pipe(gulp.dest(jspub))
.pipe(rename('appstrap.min.js'))
.pipe(uglify())
.pipe(gulp.dest(jspub));
});
// Filewatcher for changes
gulp.task('watch', function () {
gulp.watch(jsdir + '*.js', ['scripts']);
gulp.watch(lessdir + '*.less', ['less']);
});
// Default Task combination
gulp.task('default', ['less', 'scripts', 'watch']);
All files are in their proper place, so they exists. And once I do #import appstrap.less, it comes out with the error **Potentially unhandled rejection [2].
frontend.less looks like this:
// Core source files of the whole frontend plugins
#import (once) "appstrap.less";
.btn{
color: #ff0000;
display: block;
}
Any visible errors ?