diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/api/AutoBuildCommon.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/api/AutoBuildCommon.java
index c6af150d..5980e8dc 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/api/AutoBuildCommon.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/api/AutoBuildCommon.java
@@ -368,7 +368,7 @@ static public String GetNiceFileName(IFolder buildPath, IFile path) {
     static public String GetNiceFileName(IPath buildPath, IPath filePath) {
         String ret;
         if (buildPath.isPrefixOf(filePath) || buildPath.removeLastSegments(3).isPrefixOf(filePath)) {
-            ret = filePath.makeRelativeTo(buildPath).toString();
+            ret = filePath.makeRelativeTo(buildPath).toOSString();
         } else {
             ret = filePath.toString();
         }
diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/CDTBuildTools.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/CDTBuildTools.java
index d0d001d6..ce5c929d 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/CDTBuildTools.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/CDTBuildTools.java
@@ -96,7 +96,7 @@ public String getPathExtension() {
 
 	@Override
 	public String getDiscoveryCommand(ToolType toolType) {
-		return getToolLocation().append( getCommand(toolType)).toString() + DISCOVERY_PARAMETERS;
+		return getToolLocation().append( getCommand(toolType)).toOSString() + DISCOVERY_PARAMETERS;
 	}
 
 	@Override
diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/MinGWBuildTools.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/MinGWBuildTools.java
index a14f19b1..34e94c64 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/MinGWBuildTools.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/buildTools/internal/MinGWBuildTools.java
@@ -92,7 +92,7 @@ public String getPathExtension() {
 
 	@Override
 	public String getDiscoveryCommand(ToolType toolType) {
-		return getToolLocation().append( getCommand(toolType)).toString() +DISCOVERY_PARAMETERS;
+		return getToolLocation().append( getCommand(toolType)).toOSString() +DISCOVERY_PARAMETERS;
 	}
 
 	@Override
diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/extensionPoint/providers/AutoBuildMakeRule.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/extensionPoint/providers/AutoBuildMakeRule.java
index f3f1ac5c..87a059b0 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/extensionPoint/providers/AutoBuildMakeRule.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/extensionPoint/providers/AutoBuildMakeRule.java
@@ -288,7 +288,7 @@ public String[] getRecipes(IFolder buildFolder, AutoBuildConfigurationDescriptio
 								IFile file = project.getWorkspace().getRoot()
 										.getFile(IPath.forPosix(curEntry.getValue()));
 								includeFiles = includeFiles + WHITESPACE + DOUBLE_QUOTE + CMD_LINE_INCLUDE_FILE
-										+ file.getLocation().toString() + DOUBLE_QUOTE;
+										+ file.getLocation().toOSString() + DOUBLE_QUOTE;
 								break;
 							}
 							case ICSettingEntry.INCLUDE_PATH: {
@@ -300,7 +300,7 @@ public String[] getRecipes(IFolder buildFolder, AutoBuildConfigurationDescriptio
 
 								}else {
 								includePath = includePath + WHITESPACE + DOUBLE_QUOTE + CMD_LINE_INCLUDE_FOLDER
-										+ path.toString() + DOUBLE_QUOTE;
+										+ path.toOSString() + DOUBLE_QUOTE;
 								}
 								break;
 							}
diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/helpers/api/AutoBuildConstants.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/helpers/api/AutoBuildConstants.java
index 439cf8a9..45556d07 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/helpers/api/AutoBuildConstants.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/helpers/api/AutoBuildConstants.java
@@ -43,6 +43,7 @@ public class AutoBuildConstants {
     public static final String PROCENT = "%";
     public static final String SLACH = "/";
     public static final String BACKSLACH = "\\";
+    public static final String PATH_SEPERATOR=isWindows?BACKSLACH:SLACH;
     public static final String FALSE = "FALSE";
     public static final String TRUE = "TRUE";
     public static final String COLON = ":";
diff --git a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/schema/internal/Tool.java b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/schema/internal/Tool.java
index 46fb4c75..61574cf9 100644
--- a/io.sloeber.autoBuild/src/io/sloeber/autoBuild/schema/internal/Tool.java
+++ b/io.sloeber.autoBuild/src/io/sloeber/autoBuild/schema/internal/Tool.java
@@ -562,7 +562,7 @@ public String[] getRecipes(IAutoBuildConfigurationDescription autoBuildConfData,
             IPath toolPath = buildTools.getToolLocation();
             if (toolPath != null && !toolPath.toString().isBlank()) {
                 //store the path
-                toolCommandVars.put(CMD_LINE_TOOL_PATH, toolPath.toString().trim() + SLACH);
+                toolCommandVars.put(CMD_LINE_TOOL_PATH, toolPath.toOSString().trim() + PATH_SEPERATOR);
             }
             Map<String, String> toolVariables = buildTools.getToolVariables();
             if (toolVariables != null && toolVariables.size() > 0) {
diff --git a/io.sloeber.core/config/pre_processing_platform_default.txt b/io.sloeber.core/config/pre_processing_platform_default.txt
index 6b47ace9..b27b1580 100644
--- a/io.sloeber.core/config/pre_processing_platform_default.txt
+++ b/io.sloeber.core/config/pre_processing_platform_default.txt
@@ -1,7 +1,7 @@
 #this file contains default/fallback/rescue values
 software=ARDUINO
 archive_file=arduino.ar
-archive_file_path=${build.path}/${archive_file}
+archive_file_path=${build.path}${PathDelimiter}${archive_file}
 ide_version=20302
 
 serial.port=${com_port}
diff --git a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardDescription.java b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardDescription.java
index 03da7d95..41eb6893 100644
--- a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardDescription.java
+++ b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardDescription.java
@@ -45,7 +45,7 @@
 import io.sloeber.core.txt.TxtFile;
 
 public class BoardDescription {
-	private static final String FIRST_SLOEBER_LINE = "#Sloeber created file please do not modify V1.00.test 06 "; //$NON-NLS-1$
+	private static final String FIRST_SLOEBER_LINE = "#Sloeber created file please do not modify V1.00.test 07 "; //$NON-NLS-1$
 	private static final IEclipsePreferences myStorageNode = InstanceScope.INSTANCE.getNode(NODE_ARDUINO);
 
 	/*
@@ -1072,7 +1072,7 @@ private Map<String, String> getEnvVarPlatformFileTools(IArduinoPlatformVersion p
 			for (ArduinoPlatformTooldDependency tool : platformVersion.getToolsDependencies()) {
 				IPath installPath = tool.getInstallPath();
 				if (installPath.toFile().exists()) {
-					String value = installPath.toString();
+					String value = installPath.toOSString();
 					String keyString = ENV_KEY_RUNTIME_TOOLS + tool.getName() + tool.getVersion() + DOT_PATH;
 					vars = vars + NEWLINE + keyString + EQUAL + value;
 					keyString = ENV_KEY_RUNTIME_TOOLS + tool.getName() + '-' + tool.getVersion() + DOT_PATH;
diff --git a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardsManager.java b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardsManager.java
index 6e1cc4ff..bbf3e406 100644
--- a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardsManager.java
+++ b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/BoardsManager.java
@@ -416,7 +416,7 @@ private static IStatus uninstall(IArduinoPlatformVersion curPlatform) {
 			deleteDirectory(installFolder);
 			envVarsNeedUpdating = true;
 		} catch (IOException e) {
-			return new Status(IStatus.ERROR, Activator.getId(), "Failed to remove folder" + installFolder.toString(), //$NON-NLS-1$
+			return new Status(IStatus.ERROR, Activator.getId(), "Failed to remove folder" + installFolder.toOSString(), //$NON-NLS-1$
 					e);
 		}
 
diff --git a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/LibraryManager.java b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/LibraryManager.java
index ef797ca0..09476933 100644
--- a/io.sloeber.core/src/io/sloeber/arduinoFramework/api/LibraryManager.java
+++ b/io.sloeber.core/src/io/sloeber/arduinoFramework/api/LibraryManager.java
@@ -174,7 +174,7 @@ public static IStatus unInstall(IArduinoLibraryVersion lib, IProgressMonitor mon
 			deleteDirectory(lib.getInstallPath().removeLastSegments(1));
 		} catch (IOException e) {
 			return new Status(IStatus.ERROR, Activator.getId(),
-					"Failed to remove folder" + lib.getInstallPath().toString(), //$NON-NLS-1$
+					"Failed to remove folder" + lib.getInstallPath().toOSString(), //$NON-NLS-1$
 					e);
 		}
 
diff --git a/io.sloeber.core/src/io/sloeber/core/api/Common.java b/io.sloeber.core/src/io/sloeber/core/api/Common.java
index f007b3fd..b29e8131 100644
--- a/io.sloeber.core/src/io/sloeber/core/api/Common.java
+++ b/io.sloeber.core/src/io/sloeber/core/api/Common.java
@@ -31,7 +31,7 @@ public class Common {
 
     public final static String sloeberHome = getSloeberHome();
     public final static IPath sloeberHomePath = new org.eclipse.core.runtime.Path(sloeberHome);
-    public final static String sloeberHomePathToString = sloeberHomePath.toString();
+    public final static String sloeberHomePathToString = sloeberHomePath.toOSString();
 
     private static String getSloeberHome() {
 
@@ -213,7 +213,7 @@ public static IPath getWorkspaceRoot() {
      */
     public static String makePathVersionString(File file) {
     	if(sloeberHomePath.isPrefixOf(IPath.fromFile(file))) {
-    		return SLOEBER_HOME_VAR+SLACH+IPath.fromFile(file) .makeRelativeTo(sloeberHomePath).toString();
+    		return SLOEBER_HOME_VAR+SLACH+IPath.fromFile(file).makeRelativeTo(sloeberHomePath).toString();
     	}
         return file.toString();
     }
diff --git a/io.sloeber.core/src/io/sloeber/core/api/ConfigurationPreferences.java b/io.sloeber.core/src/io/sloeber/core/api/ConfigurationPreferences.java
index 272d2f3a..c81028ab 100644
--- a/io.sloeber.core/src/io/sloeber/core/api/ConfigurationPreferences.java
+++ b/io.sloeber.core/src/io/sloeber/core/api/ConfigurationPreferences.java
@@ -206,12 +206,12 @@ public static File getPostProcessingBoardsFile() {
 	}
 
 	public static Path getMakePath() {
-		return new Path(getInstallationPath().append("tools/make").toString()); //$NON-NLS-1$
+		return new Path(getInstallationPath().append("tools/make").toOSString()); //$NON-NLS-1$
 
 	}
 
 	public static IPath getAwkPath() {
-		return new Path(getInstallationPath().append("tools/awk").toString()); //$NON-NLS-1$
+		return new Path(getInstallationPath().append("tools/awk").toOSString()); //$NON-NLS-1$
 	}
 
 	public static Instant getLatestJsonUpdateTime() {
diff --git a/io.sloeber.core/src/io/sloeber/core/api/Defaults.java b/io.sloeber.core/src/io/sloeber/core/api/Defaults.java
index 42c0cd32..db6c4249 100644
--- a/io.sloeber.core/src/io/sloeber/core/api/Defaults.java
+++ b/io.sloeber.core/src/io/sloeber/core/api/Defaults.java
@@ -49,7 +49,7 @@ public static String getPrivateLibraryPath() {
         if (isMac || isWindows) {
             homPath = homPath.append("Documents");
         }
-        return homPath.append("Arduino").append(ARDUINO_LIBRARY_FOLDER_NAME).toString();
+        return homPath.append("Arduino").append(ARDUINO_LIBRARY_FOLDER_NAME).toOSString();
     }
 
     public static String getPrivateHardwarePath() {
@@ -57,7 +57,7 @@ public static String getPrivateHardwarePath() {
         if (isMac || isWindows) {
             homPath = homPath.append("Documents");
         }
-        return homPath.append("Arduino").append(ARDUINO_HARDWARE_FOLDER_NAME).toString();
+        return homPath.append("Arduino").append(ARDUINO_HARDWARE_FOLDER_NAME).toOSString();
     }
 
     public static String getDefaultDisconnectSerialTargets() {