diff --git a/Ports/JavaSE/src/com/codename1/impl/javase/Executor.java b/Ports/JavaSE/src/com/codename1/impl/javase/Executor.java
index 08c60a8ab7..53f5741b38 100644
--- a/Ports/JavaSE/src/com/codename1/impl/javase/Executor.java
+++ b/Ports/JavaSE/src/com/codename1/impl/javase/Executor.java
@@ -108,7 +108,7 @@ private static int getJavaVersion() {
         int dotPos = version.indexOf('.');
         int dashPos = version.indexOf('-');
         return Integer.parseInt(version.substring(0,
-                dotPos > -1 ? dotPos : dashPos > -1 ? dashPos : 1));
+                dotPos > -1 ? dotPos : dashPos > -1 ? dashPos : version.length()));
     }
     
     static void setMacApplicationEventHandled(Object event, boolean handled) {
diff --git a/maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/IPhoneBuilder.java b/maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/IPhoneBuilder.java
index 944b45faea..477865a37c 100644
--- a/maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/IPhoneBuilder.java
+++ b/maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/IPhoneBuilder.java
@@ -2641,21 +2641,27 @@ private int getMajorVersionInt(String versionStr, int defaultVal) {
     private String[] getStubCompileSourceTarget(String javacPath) {
         String source = "1.6";
         String target = "1.6";
+        int major = -1;
+        String version = null;
         try {
             String versionOutput = execString(tmpFile != null ? tmpFile : new File("."), javacPath, "-version");
             if (versionOutput != null && versionOutput.trim().length() > 0) {
                 String[] parts = versionOutput.trim().split("\\s+");
-                String version = parts[parts.length - 1];
-                int major = getMajorVersionInt(version, -1);
-                if (major >= 9) {
-                    source = "8";
-                    target = "8";
-                    log("JDK " + version + " does not support -source/-target 1.6. Compiling iOS stubs with -source/-target 8.");
-                }
+                version = parts[parts.length - 1];
+                major = getMajorVersionInt(version, -1);
             }
         } catch (Exception ex) {
             debug("Failed to resolve javac version for iOS stub compile: " + ex.getMessage());
         }
+        if (major < 0) {
+            version = System.getProperty("java.version");
+            major = getMajorVersionInt(version, -1);
+        }
+        if (major >= 9) {
+            source = "8";
+            target = "8";
+            log("JDK " + version + " does not support -source/-target 1.6. Compiling iOS stubs with -source/-target 8.");
+        }
         return new String[]{source, target};
     }
 
diff --git a/scripts/initializr/common/src/main/java/com/codename1/initializr/model/GeneratorModel.java b/scripts/initializr/common/src/main/java/com/codename1/initializr/model/GeneratorModel.java
index 311d58c910..27fd27899c 100644
--- a/scripts/initializr/common/src/main/java/com/codename1/initializr/model/GeneratorModel.java
+++ b/scripts/initializr/common/src/main/java/com/codename1/initializr/model/GeneratorModel.java
@@ -190,8 +190,18 @@ private byte[] applyDataReplacements(String targetPath, byte[] sourceData) throw
         if ("common/pom.xml".equals(targetPath)) {
             content = applyJavaVersionToPom(content);
         }
+        if (".idea/misc.xml".equals(targetPath)) {
+            content = normalizeIntellijMiscXml(content);
+        }
+        if (".idea/workspace.xml".equals(targetPath)) {
+            content = applySimulatorJvmExportToIdeaWorkspace(content);
+        }
         if ("pom.xml".equals(targetPath)) {
             content = replaceTagValue(content, "cn1.plugin.version", CN1_PLUGIN_VERSION);
+            content = replaceTagValue(content, "cn1.version", CN1_PLUGIN_VERSION);
+        }
+        if ("android/pom.xml".equals(targetPath) || "ios/pom.xml".equals(targetPath)) {
+            content = hardenPlatformModulePomAgainstDoubleJarAttach(content);
         }
         if ("javase/pom.xml".equals(targetPath)) {
             content = normalizeJavasePom(content);
@@ -217,6 +227,97 @@ private String applyJavaVersionToPom(String content) {
         return content;
     }
 
+    private String normalizeIntellijMiscXml(String content) {
+        String languageLevel = options.javaVersion == ProjectOptions.JavaVersion.JAVA_17_EXPERIMENTAL ? "JDK_17" : "JDK_1_8";
+        content = removeXmlAttribute(content, "project-jdk-name");
+        content = removeXmlAttribute(content, "project-jdk-type");
+        content = setXmlAttribute(content, "languageLevel", languageLevel);
+        return content;
+    }
+
+    private static String removeXmlAttribute(String xml, String attributeName) {
+        String pattern = attributeName + "=\"";
+        int pos = xml.indexOf(pattern);
+        if (pos < 0) {
+            return xml;
+        }
+        int valueStart = pos + pattern.length();
+        int valueEnd = xml.indexOf('"', valueStart);
+        if (valueEnd < 0) {
+            return xml;
+        }
+        int removeStart = pos;
+        while (removeStart > 0 && xml.charAt(removeStart - 1) == ' ') {
+            removeStart--;
+        }
+        return xml.substring(0, removeStart) + xml.substring(valueEnd + 1);
+    }
+
+    private static String setXmlAttribute(String xml, String attributeName, String value) {
+        String pattern = attributeName + "=\"";
+        int pos = xml.indexOf(pattern);
+        if (pos < 0) {
+            return xml;
+        }
+        int valueStart = pos + pattern.length();
+        int valueEnd = xml.indexOf('"', valueStart);
+        if (valueEnd < 0) {
+            return xml;
+        }
+        return xml.substring(0, valueStart) + value + xml.substring(valueEnd);
+    }
+
+    private static String applySimulatorJvmExportToIdeaWorkspace(String content) {
+        String configHeader = "<configuration name=\"Run in Simulator\"";
+        int start = content.indexOf(configHeader);
+        if (start < 0) {
+            return content;
+        }
+        int end = content.indexOf("</configuration>", start);
+        if (end < 0) {
+            return content;
+        }
+        String segment = content.substring(start, end);
+        String exportArg = "--add-exports=java.desktop/com.apple.eawt=ALL-UNNAMED";
+        if (segment.indexOf(exportArg) >= 0) {
+            return content;
+        }
+        segment = StringUtil.replaceAll(segment, "<option name=\"vmOptions\" value=\"\" />",
+                "<option name=\"vmOptions\" value=\"" + exportArg + "\" />");
+        return content.substring(0, start) + segment + content.substring(end);
+    }
+
+    private static String hardenPlatformModulePomAgainstDoubleJarAttach(String pom) {
+        String pluginBlock =
+                "<plugin>\n" +
+                "                <groupId>org.apache.maven.plugins</groupId>\n" +
+                "                <artifactId>maven-jar-plugin</artifactId>\n" +
+                "                <version>3.4.1</version>\n" +
+                "                <executions>\n" +
+                "                    <execution>\n" +
+                "                        <id>default-jar</id>\n" +
+                "                        <phase>none</phase>\n" +
+                "                    </execution>\n" +
+                "                </executions>\n" +
+                "            </plugin>\n";
+        if (pom.indexOf("<artifactId>maven-jar-plugin</artifactId>") >= 0) {
+            if (pom.indexOf("<id>default-jar</id>") >= 0 && pom.indexOf("<phase>none</phase>") >= 0) {
+                return pom;
+            }
+            int pluginsTag = pom.indexOf("<plugins>\n");
+            if (pluginsTag >= 0) {
+                int firstPluginStart = pom.indexOf("<plugin>", pluginsTag);
+                if (firstPluginStart >= 0) {
+                    return pom.substring(0, firstPluginStart) + pluginBlock + pom.substring(firstPluginStart);
+                }
+            }
+            return pom;
+        }
+        return StringUtil.replaceAll(pom,
+                "<plugins>\n",
+                "<plugins>\n" + pluginBlock);
+    }
+
     private String injectLocalizationBootstrap(String targetPath, String content) {
         String javaMainPath = "common/src/main/java/" + packageName.replace('.', '/') + "/" + appName + ".java";
         String kotlinMainPath = "common/src/main/kotlin/" + packageName.replace('.', '/') + "/" + appName + ".kt";
diff --git a/scripts/initializr/common/src/test/java/com/codename1/initializr/model/GeneratorModelMatrixTest.java b/scripts/initializr/common/src/test/java/com/codename1/initializr/model/GeneratorModelMatrixTest.java
index 925b51ec19..cdcd876dfe 100644
--- a/scripts/initializr/common/src/test/java/com/codename1/initializr/model/GeneratorModelMatrixTest.java
+++ b/scripts/initializr/common/src/test/java/com/codename1/initializr/model/GeneratorModelMatrixTest.java
@@ -22,6 +22,7 @@ public boolean runTest() throws Exception {
             }
         }
         validateExperimentalJava17Generation();
+        validateExperimentalJava17RegressionFixes();
         return true;
     }
 
@@ -47,6 +48,44 @@ private void validateExperimentalJava17Generation() throws Exception {
         assertLocalizationBundles(entries, Template.BAREBONES, true);
     }
 
+    private void validateExperimentalJava17RegressionFixes() throws Exception {
+        String mainClassName = "DemoExperimentalJava17Regression";
+        String packageName = "com.acme.experimental.java17regression";
+        ProjectOptions options = new ProjectOptions(
+                ProjectOptions.ThemeMode.LIGHT,
+                ProjectOptions.Accent.DEFAULT,
+                true,
+                true,
+                ProjectOptions.PreviewLanguage.ENGLISH,
+                ProjectOptions.JavaVersion.JAVA_17_EXPERIMENTAL
+        );
+
+        byte[] zipData = createProjectZip(IDE.INTELLIJ, Template.BAREBONES, mainClassName, packageName, options);
+        Map<String, byte[]> entries = readZipEntries(zipData);
+
+        String intellijMisc = getText(entries, ".idea/misc.xml");
+        assertContains(intellijMisc, "languageLevel=\"JDK_17\"", "IntelliJ misc.xml should use Java 17 language level for Java 17 projects");
+        assertFalse(intellijMisc.indexOf("project-jdk-name=") >= 0, "IntelliJ misc.xml should not pin a specific JDK name");
+        assertFalse(intellijMisc.indexOf("project-jdk-type=") >= 0, "IntelliJ misc.xml should not pin a specific JDK type");
+
+        String intellijWorkspace = getText(entries, ".idea/workspace.xml");
+        assertContains(intellijWorkspace, "<configuration name=\"Run in Simulator\"", "IntelliJ workspace should include Run in Simulator profile");
+        assertContains(intellijWorkspace, "--add-exports=java.desktop/com.apple.eawt=ALL-UNNAMED",
+                "Run in Simulator profile should export com.apple.eawt for JDK 17+");
+
+        String androidPom = getText(entries, "android/pom.xml");
+        assertContains(androidPom, "<artifactId>maven-jar-plugin</artifactId>", "Android module should configure maven-jar-plugin explicitly");
+        assertContains(androidPom, "<version>3.4.1</version>", "Android module should pin maven-jar-plugin version");
+        assertContains(androidPom, "<id>default-jar</id>", "Android module should target default-jar execution");
+        assertContains(androidPom, "<phase>none</phase>", "Android module should disable default-jar execution to avoid duplicate attach in cn1:build");
+
+        String iosPom = getText(entries, "ios/pom.xml");
+        assertContains(iosPom, "<artifactId>maven-jar-plugin</artifactId>", "iOS module should configure maven-jar-plugin explicitly");
+        assertContains(iosPom, "<version>3.4.1</version>", "iOS module should pin maven-jar-plugin version");
+        assertContains(iosPom, "<id>default-jar</id>", "iOS module should target default-jar execution");
+        assertContains(iosPom, "<phase>none</phase>", "iOS module should disable default-jar execution to avoid duplicate attach in cn1:build");
+    }
+
     private void validateCombination(Template template, IDE ide) throws Exception {
         String mainClassName = "Demo" + template.ordinal() + ide.ordinal() + "App";
         String packageName = "com.acme.t" + template.ordinal() + ".i" + ide.ordinal();
@@ -122,6 +161,7 @@ private void assertRootPom(Map<String, byte[]> entries, String packageName, Stri
         assertContains(pom, packageName, "Root pom should include package as groupId");
         assertContains(pom, mainClassName.toLowerCase(), "Root pom should include app artifact/name");
         assertContains(pom, "<cn1.plugin.version>7.0.227</cn1.plugin.version>", "Root pom should use current CN1 plugin version");
+        assertContains(pom, "<cn1.version>7.0.227</cn1.version>", "Root pom should align CN1 runtime version with plugin version");
         assertFalse(pom.indexOf("com.example.myapp") >= 0, "Root pom still contains placeholder package");
         assertFalse(pom.indexOf("myappname") >= 0, "Root pom still contains placeholder app name");
     }