switched to using wro4j, main file works but responsive file doesn’t

openid-connect-server-webapp/pom.xml

@@ -84,30 +84,35 @@
 				</configuration>
 			</plugin>
 			<plugin>
-				<groupId>org.lesscss</groupId>
-				<artifactId>lesscss-maven-plugin</artifactId>
-				<configuration>
-					<sourceDirectory>${project.basedir}/src/main/less</sourceDirectory>
-					<outputDirectory>${project.basedir}/src/main/webapp/resources/bootstrap2/css</outputDirectory>
-					<compress>false</compress>
-					<includes>
-						<include>bootstrap.less</include>
-						<include>bootstrap-responsive.less</include>
-					</includes>
-				</configuration>
+				<groupId>ro.isdc.wro4j</groupId>
+				<artifactId>wro4j-maven-plugin</artifactId>
+				<version>1.8.0</version>
 				<executions>
 					<execution>
+						<phase>compile</phase>
 						<goals>
-							<goal>compile</goal>
+							<goal>run</goal>
 						</goals>
-						<phase>process-sources</phase>
 					</execution>
 				</executions>
+				<configuration>
+					<targetGroups>bootstrap</targetGroups>
+					<destinationFolder>${project.build.directory}/${project.build.finalName}</destinationFolder>
+					<cssDestinationFolder>${project.build.directory}/${project.build.finalName}/resources/bootstrap2/css/</cssDestinationFolder>
+					<jsDestinationFolder>${project.build.directory}/${project.build.finalName}/js/</jsDestinationFolder>
+					<wroManagerFactory>ro.isdc.wro.maven.plugin.manager.factory.ConfigurableWroManagerFactory</wroManagerFactory>
+				</configuration>
 			</plugin>
+			
 		</plugins>
 	</build>
 	<dependencies>
-		<dependency>
+  <dependency>
+    <groupId>ro.isdc.wro4j</groupId>
+    <artifactId>wro4j-extensions</artifactId>
+    <version>1.8.0</version>
+  </dependency>
+  		<dependency>
 			<groupId>org.mitre</groupId>
 			<artifactId>openid-connect-server</artifactId>
 		</dependency>

openid-connect-server-webapp/src/main/webapp/WEB-INF/wro.properties

@@ -0,0 +1,2 @@
+preProcessors=cssImport
+postProcessors=lessCss

openid-connect-server-webapp/src/main/webapp/WEB-INF/wro.xml

@@ -0,0 +1,6 @@
+<groups xmlns="http://www.isdc.ro/wro">	
+  <group name="bootstrap">
+    <css>/less/bootstrap.less</css>
+    <css>/less/bootstrap-responsive.less</css>
+  </group> 	  	
+</groups>