diff --git a/SampleFiles/genAllRessources.sh b/SampleFiles/genAllRessources.sh
index ee35443..c1d139c 100755
--- a/SampleFiles/genAllRessources.sh
+++ b/SampleFiles/genAllRessources.sh
@@ -1,7 +1,7 @@
 #/bin/bash
 
 # Font
-swift run -c release FontToolCore "./Fonts/sampleFontsAll.txt" \
+swift run -c release FontToolCore "./Fonts/sampleFontsAl.txt" \
  --extension-output-path "./Fonts/Generated" \
  --extension-name "R2Font" \
  --extension-suffix "GenAllScript"
diff --git a/Sources/ColorToolCore/ColorToolError.swift b/Sources/ColorToolCore/ColorToolError.swift
index b5a0f73..7b90073 100644
--- a/Sources/ColorToolCore/ColorToolError.swift
+++ b/Sources/ColorToolCore/ColorToolError.swift
@@ -17,37 +17,19 @@ enum ColorToolError: Error {
     var description: String {
         switch self {
         case .badFormat(let info):
-            return """
-            [ColorTool]
-            Bad line format: \(info). Accepted format are:
-            - colorName="#RGB/#ARGB"
-            - colorName "#RGB/#ARGB"
-            - colorName "#RGB/#ARGB" "#RGB/#ARGB"
-            """
+            return "error:[ColorTool] Bad line format: \(info). Accepted format are: colorName=\"#RGB/#ARGB\"; colorName \"#RGB/#ARGB\"; colorName \"#RGB/#ARGB\" \"#RGB/#ARGB\""
             
         case .writeAsset(let info):
-            return """
-            [ColorTool]
-            An error occured while writing color in Xcasset: \(info)
-            """
+            return "error:[ColorTool] An error occured while writing color in Xcasset: \(info)"
             
         case .writeExtension(let filename, let info):
-            return """
-            [ColorTool]
-            An error occured while writing extension in \(filename): \(info)
-            """
+            return "error:[ColorTool] An error occured while writing extension in \(filename): \(info)"
             
         case .fileNotExists(let filename):
-            return """
-            [ColorTool]
-            File \(filename) does not exists
-            """
+            return "error:[ColorTool] File \(filename) does not exists"
             
         case .badColorDefinition(let lightColor, let darkColor):
-            return """
-            [ColorTool]
-            One of these two colors has invalid synthax: -\(lightColor)- or -\(darkColor)-
-            """
+            return "error:[ColorTool]One of these two colors has invalid synthax: -\(lightColor)- or -\(darkColor)-"
         }
     }
 }
diff --git a/Sources/ColorToolCore/ColorXcassetHelper.swift b/Sources/ColorToolCore/ColorXcassetHelper.swift
index d909e65..ec6e56f 100644
--- a/Sources/ColorToolCore/ColorXcassetHelper.swift
+++ b/Sources/ColorToolCore/ColorXcassetHelper.swift
@@ -34,7 +34,9 @@ struct ColorXcassetHelper {
         do {
             try color.contentsJSON().write(to: contentsJsonPathURL, atomically: true, encoding: .utf8)
         } catch (let error) {
-            ColorTool.exit(withError: ColorToolError.writeAsset(error.localizedDescription))
+            let error = ColorToolError.writeAsset(error.localizedDescription)
+            print(error.localizedDescription)
+            ColorTool.exit(withError: error)
         }
     }
 }
diff --git a/Sources/ColorToolCore/GenColor.swift b/Sources/ColorToolCore/GenColor.swift
index 10526f3..2258fb0 100644
--- a/Sources/ColorToolCore/GenColor.swift
+++ b/Sources/ColorToolCore/GenColor.swift
@@ -25,7 +25,9 @@ struct GenColor {
         }
         
         guard allComponents.contains(true) == false else {
-            ColorTool.exit(withError: ColorToolError.badColorDefinition(light, dark))
+            let error = ColorToolError.badColorDefinition(light, dark)
+            print(error.localizedDescription)
+            ColorTool.exit(withError: error)
         }
         
         return """
diff --git a/Sources/ColorToolCore/main.swift b/Sources/ColorToolCore/main.swift
index b496ed7..f6aa216 100644
--- a/Sources/ColorToolCore/main.swift
+++ b/Sources/ColorToolCore/main.swift
@@ -52,10 +52,14 @@ struct ColorTool: ParsableCommand {
         // Check requirements
         let fileManager = FileManager()
         guard fileManager.fileExists(atPath: xcassetsPath) else {
-            ColorTool.exit(withError: ColorToolError.fileNotExists(xcassetsPath))
+            let error = ColorToolError.fileNotExists(xcassetsPath)
+            print(error.localizedDescription)
+            ColorTool.exit(withError: error)
         }
         guard fileManager.fileExists(atPath: inputFile) else {
-            ColorTool.exit(withError: ColorToolError.fileNotExists(xcassetsPath))
+            let error = ColorToolError.fileNotExists(inputFile)
+            print(error.localizedDescription)
+            ColorTool.exit(withError: error)
         }
 
         // Check if needed to regenerate
@@ -103,7 +107,9 @@ struct ColorTool: ParsableCommand {
         do {
             try extensionContent.write(to: extensionFilePathURL, atomically: true, encoding: .utf8)
         } catch (let error) {
-            ColorTool.exit(withError: ColorToolError.writeExtension(extensionFilePath, error.localizedDescription))
+            let error = ColorToolError.writeExtension(extensionFilePath, error.localizedDescription)
+            print(error.localizedDescription)
+            ColorTool.exit(withError: error)
         }
     }
     
@@ -128,7 +134,9 @@ struct ColorTool: ParsableCommand {
             let colorContent = colorLineCleanedUp.split(separator: " ")
             
             guard colorContent.count >= 2 else {
-                ColorTool.exit(withError: ColorToolError.badFormat(colorLine))
+                let error = ColorToolError.badFormat(colorLine)
+                print(error.localizedDescription)
+                ColorTool.exit(withError: error)
             }
             
             switch colorStyle {
diff --git a/Sources/FontToolCore/FontToolError.swift b/Sources/FontToolCore/FontToolError.swift
index 6f9ff04..d932155 100644
--- a/Sources/FontToolCore/FontToolError.swift
+++ b/Sources/FontToolCore/FontToolError.swift
@@ -13,26 +13,16 @@ enum FontToolError: Error {
     case inputFolderNotFound(String)
     case fileNotExists(String)
     
-    var description: String {
+    var localizedDescription: String {
         switch self {
         case .fcScan(let path, let code, let output):
-            return """
-            error: [FontTool]
-            Error while getting fontName (fc-scan --format %{postscriptname} \(path).
-            fc-scan exit with \(code) and output is: \(output ?? "no output")
-            """
+            return "error:[FontTool] Error while getting fontName (fc-scan --format %{postscriptname} \(path). fc-scan exit with \(code) and output is: \(output ?? "no output")"
             
         case .inputFolderNotFound(let inputFolder):
-            return """
-            error: [FontTool]
-            Input folder not found: \(inputFolder)
-            """
+            return " error:[FontTool] Input folder not found: \(inputFolder)"
             
         case .fileNotExists(let filename):
-            return """
-            error: [FontTool]
-            File \(filename) does not exists
-            """
+            return " error:[FontTool] File \(filename) does not exists "
         }
     }
 }
diff --git a/Sources/FontToolCore/FontToolHelper.swift b/Sources/FontToolCore/FontToolHelper.swift
index 55751c7..aea6118 100644
--- a/Sources/FontToolCore/FontToolHelper.swift
+++ b/Sources/FontToolCore/FontToolHelper.swift
@@ -13,7 +13,9 @@ class FontToolHelper {
         // Get a enumerator for all files
         let fileManager = FileManager()
         guard fileManager.fileExists(atPath: inputFolder) else {
-            FontTool.exit(withError: FontToolError.inputFolderNotFound(inputFolder))
+            let error = FontToolError.inputFolderNotFound(inputFolder)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         let enumerator: FileManager.DirectoryEnumerator = fileManager.enumerator(atPath: inputFolder)!
@@ -41,7 +43,9 @@ class FontToolHelper {
         let task = Shell.shell("fc-scan", "--format", "%{postscriptname}", path)
         
         guard let fontName = task.output, task.terminationStatus == 0 else {
-            FontTool.exit(withError: FontToolError.fcScan(path, task.terminationStatus, task.output))
+            let error = FontToolError.fcScan(path, task.terminationStatus, task.output)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         return fontName
diff --git a/Sources/FontToolCore/main.swift b/Sources/FontToolCore/main.swift
index a8e7f90..099a788 100644
--- a/Sources/FontToolCore/main.swift
+++ b/Sources/FontToolCore/main.swift
@@ -41,7 +41,9 @@ struct FontTool: ParsableCommand {
         // Check requirements
         let fileManager = FileManager()
         guard fileManager.fileExists(atPath: inputFile) else {
-            FontTool.exit(withError: FontToolError.fileNotExists(inputFile))
+            let error = FontToolError.fileNotExists(inputFile)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         // Check if needed to regenerate