diff --git a/java/core/build.xml b/java/core/build.xml
index a44456f..45cbddb 100755
--- a/java/core/build.xml
+++ b/java/core/build.xml
@@ -14,7 +14,7 @@
         <copy todir="tmp/classes">
             <fileset dir="src"/>
         </copy>
-        <jar destfile="lib/greenscript-core-1.2.6k.jar" basedir="tmp/classes"/>
+        <jar destfile="lib/greenscript-core-1.2.6l.jar" basedir="tmp/classes"/>
         <delete dir="tmp" />
     </target>
 
diff --git a/java/core/lib/greenscript-core-1.2.6k.jar b/java/core/lib/greenscript-core-1.2.6k.jar
index be16f5d..e0761ac 100755
Binary files a/java/core/lib/greenscript-core-1.2.6k.jar and b/java/core/lib/greenscript-core-1.2.6k.jar differ
diff --git a/java/core/lib/play-greenscript.jar b/java/core/lib/play-greenscript.jar
index 5864171..a2a4a39 100755
Binary files a/java/core/lib/play-greenscript.jar and b/java/core/lib/play-greenscript.jar differ
diff --git a/java/core/pom.xml b/java/core/pom.xml
index b430a97..b1537a0 100755
--- a/java/core/pom.xml
+++ b/java/core/pom.xml
@@ -9,7 +9,7 @@
     <artifactId>greenscript-core</artifactId>
     <packaging>jar</packaging>
     <name>GreenScript Core</name>
-    <version>1.2.6k</version>
+    <version>1.2.6l</version>
     <description>A Java package to manage and process Web Resources (Javascript/CSS)</description>
     <url>http://github.com/greenlaw110/greenscript</url>
     
diff --git a/java/core/src/main/java/com/greenscriptool/Minimizer.java b/java/core/src/main/java/com/greenscriptool/Minimizer.java
index 6f8304f..942d12f 100755
--- a/java/core/src/main/java/com/greenscriptool/Minimizer.java
+++ b/java/core/src/main/java/com/greenscriptool/Minimizer.java
@@ -424,7 +424,7 @@ public String processInline(String content) {
     public String processStatic(File file) {
         String content = null;
         try {
-            content = preprocess_(file, file.getPath());
+            content = preprocess_(file);
         } catch (IOException e2) {
             logger_.error("error preprocess static file: " + file.getPath());
             return "";
@@ -657,6 +657,27 @@ private boolean postMergeLessCompile_() {
         return Boolean.valueOf(System.getProperty("greenscript.lessCompile.postMerge", "false"));
     }
     
+    private String preprocess_(File file) throws IOException {
+        String s = null;
+        if (lessEnabled_() && !postMergeLessCompile_()) {
+            try {
+                s = compileLess_(file);
+            } catch (LessException e) {
+                logger_.warn("error compile less file: " + file.getName() + ", error: " + e.getMessage());
+            }
+        } else {
+//            if (file.getName().endsWith(".coffee")) {
+//                try {
+//                    s = coffee_.compile(fileToString_(file));
+//                } catch (JCoffeeScriptCompileException e) {
+//                    logger_.error("error compile coffee script file", e);
+//                }
+//            }
+        }
+        if (null == s) s = fileToString_(file);
+        return s;
+    }
+    
     private String preprocess_(File file, String originalFn) throws IOException {
         String s = null;
         if (lessEnabled_() && !postMergeLessCompile_()) {
diff --git a/java/play/app/controllers/greenscript/Service.java b/java/play/app/controllers/greenscript/Service.java
index 6358dcb..9000cee 100755
--- a/java/play/app/controllers/greenscript/Service.java
+++ b/java/play/app/controllers/greenscript/Service.java
@@ -5,6 +5,7 @@
 import play.modules.greenscript.GreenScriptPlugin;
 import play.mvc.Controller;
 import play.mvc.Http;
+import play.mvc.Scope.Flash;
 
 public class Service extends Controller {
     
@@ -14,6 +15,7 @@ public static void getInMemoryCache(String key) {
         final long l = System.currentTimeMillis();
         final String etag = "\"" + l + "-" + key.hashCode() + "\"";
         response.cacheFor(etag, "100d", l);
+        Flash.current().keep();
         
         Map<String, Http.Header> headers = request.headers;
         if (headers.containsKey("if-none-match") && headers.containsKey("if-modified-since")) {
diff --git a/java/play/conf/dependencies.yml b/java/play/conf/dependencies.yml
index 193ee13..848ab67 100755
--- a/java/play/conf/dependencies.yml
+++ b/java/play/conf/dependencies.yml
@@ -1,4 +1,4 @@
-self: play -> greenscript 1.2.6k
+self: play -> greenscript 1.2.6l
 
 require:
     - play 1.2
diff --git a/java/play/documentation/manual/home.textile b/java/play/documentation/manual/home.textile
index dc90145..1f08bfa 100755
--- a/java/play/documentation/manual/home.textile
+++ b/java/play/documentation/manual/home.textile
@@ -3,6 +3,10 @@ h1. GreenScript module
 The GreenScript module help you to manage javascript and CSS dependencies and do minimizing work in the same time.
 <script type="text/javascript" src="http://www.ohloh.net/p/485839/widgets/project_users_logo.js"></script>
 
+h2. <a>What's new for v1.2.6l</a>
+
+* Bug fix: "relative URL convert breaks on linux when service static css file":https://github.com/greenlaw110/greenscript/issues/24
+
 h2. <a>What's New for v1.2.6k</a>
 
 * Fix a bug that cached content get cleared by accident
@@ -19,14 +23,14 @@ h2. <a>What's New for v1.2.6i</a>
 * Bug fix: Rhino version conflict between LessEngine and YUICompressor
 * Support both .css and .less extension for stylesheet files
 * Enable last-modified timestamp check for resource files even greenscript.minimize is turned on.
-* Fix bug: https://github.com/greenlaw110/greenscript/issues/18, e.g. support relative url path in css
-* Fix bug: https://github.com/greenlaw110/greenscript/issues/19, e.g support Play.ctxPath
-* Fix bug: https://github.com/greenlaw110/greenscript/issues/21 (found on v1.2.6h)
+* Bug fix: https://github.com/greenlaw110/greenscript/issues/18, e.g. support relative url path in css
+* Bug fix: https://github.com/greenlaw110/greenscript/issues/19, e.g support Play.ctxPath
+* Bug fix: https://github.com/greenlaw110/greenscript/issues/21 (found on v1.2.6h)
 
 h2. <a>What's New for v1.2.6</a>
 
 * Support <a href="http://lesscss.org" >LESS</a>
-* Fix bug: https://github.com/greenlaw110/greenscript/issues/18
+* Bug fix: https://github.com/greenlaw110/greenscript/issues/18
 * CSS file will always get merged without regarding to greenscript.minimize setting
 
 h2. <a>What's New for v1.2.5</a>
@@ -43,8 +47,8 @@ h2. <a>What's New for v1.2.4</a>
 h2. <a>What's New for v1.2.3</a>
 
 * upgrade YUI compressor version from 2.4.2 to 2.4.6
-* Fix bug: 404 error while fetching cached files when change minimize/cache setting dynamically
-* Fix bug: loaded logic breaks when minimize is enabled
+* Bug fix: 404 error while fetching cached files when change minimize/cache setting dynamically
+* Bug fix: loaded logic breaks when minimize is enabled
 
 h2. <a>What's New for v1.2.2</a>
 
@@ -60,7 +64,7 @@ h2. <a>What's New for v1.2d</a>
 ** Now: greenscript.dir.js=javascripts (suppose greenscript.dir.root=/public)
 ** Previously: greenscript.dir.css=/public/stylesheets
 ** Now: greenscript.dir.css=stylesheets (suppose greenscript.dir.root=/public)
-* Fix bug: https://github.com/greenlaw110/greenscript/issues#issue/11
+* Bug fix: https://github.com/greenlaw110/greenscript/issues#issue/11
 ** greenscript now support dependency management in modules (your css/js files in modules, your greenscript.conf file in moduels)
 * Support '.bundle' suffix in resource dependency configuration via greenscript.conf
 ** E.g. js.jq.bundle=http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js,http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.10/jquery-ui.js
@@ -70,7 +74,7 @@ h2. <a>What's New for v1.2d</a>
 
 h2. <a>What's New for v1.2c</a>
 
-* Fix bug: dependency management breaks for complicated dependencies
+* Bug fix: dependency management breaks for complicated dependencies
 * Support reverse dependency declaration (search for "reverse dependency declaration" in this document)
 
 h2. <a>What's New for v1.2b</a>
@@ -79,7 +83,7 @@ h2. <a>What's New for v1.2b</a>
 
 h2. <a>What's New for v1.2a</a>
 
-* Fix bug: IllegalStateException thrown out when app restart (in DEV mode)
+* Bug fix: IllegalStateException thrown out when app restart (in DEV mode)
 
 h2. <a>What's New for v1.2</a>
 
diff --git a/java/play/src/play/modules/greenscript/GreenScriptPlugin.java b/java/play/src/play/modules/greenscript/GreenScriptPlugin.java
index a90b338..9281e78 100644
--- a/java/play/src/play/modules/greenscript/GreenScriptPlugin.java
+++ b/java/play/src/play/modules/greenscript/GreenScriptPlugin.java
@@ -31,6 +31,7 @@
 import play.mvc.Http.Request;
 import play.mvc.Http.Response;
 import play.mvc.Router;
+import play.mvc.Scope.Flash;
 import play.utils.Utils;
 import play.vfs.VirtualFile;
 
@@ -54,6 +55,8 @@
  *          fix bug: https://github.com/greenlaw110/greenscript/issues/18
  *          fix bug: https://github.com/greenlaw110/greenscript/issues/19
  *          fix bug: https://github.com/greenlaw110/greenscript/issues/21
+ *          fix bug: https://github.com/greenlaw110/greenscript/issues/23
+ *          fix bug: https://github.com/greenlaw110/greenscript/issues/24
  * @version 1.2.5, 2011-08-07
  *          support in-memory cache
  * @version 1.2.1, 2011-01-20 
@@ -63,7 +66,7 @@
  */
 public class GreenScriptPlugin extends PlayPlugin {
 
-    public static final String VERSION = "1.2.6k";
+    public static final String VERSION = "1.2.6l";
 
     private static String msg_(String msg, Object... args) {
         return String.format("GreenScript-" + VERSION + "> %1$s",
@@ -264,6 +267,7 @@ public boolean serveStatic(VirtualFile file, Request request, Response response)
                 if ("GET".equalsIgnoreCase(request.method)) {
                     response.status = Http.StatusCode.NOT_MODIFIED;
                     response.cacheFor(etag, "100d", l);
+                    keepFlash_();
                     return true;
                 }
             }
@@ -308,6 +312,11 @@ public boolean serveStatic(VirtualFile file, Request request, Response response)
 //        return l;
 //    }
     
+    private void keepFlash_() {
+        Flash f = Flash.current();
+        if (f != null) f.keep();
+    }
+    
     private boolean processStatic_(VirtualFile file, Request req, Response resp, ResourceType type) {
         /*
         IRenderSession sess = type == ResourceType.JS ? jsSession() : cssSession();
@@ -328,6 +337,7 @@ private boolean processStatic_(VirtualFile file, Request req, Response resp, Res
                 if (eTag_) {
                     resp.setHeader(Names.ETAG, etag);
                 }
+                keepFlash_();
                 return true;
             } else {
                 return false;
@@ -343,6 +353,7 @@ private boolean processStatic_(VirtualFile file, Request req, Response resp, Res
                 if (eTag_) {
                     resp.setHeader(Names.ETAG, etag);
                 }
+                keepFlash_();
                 return true;
             } catch (Exception e) {
                 Logger.error(e, "error compress file %1$s", file.getName());