diff --git a/core/build.gradle b/core/build.gradle
index 512be73a..caf395c1 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -58,16 +58,29 @@ compileJava.doFirst {
 }
 
 build.doLast {
-    // Copying core jar as zip inside the mode folder
-    Files.copy(file("${buildDir}/libs/core.jar").toPath(),
+
+    // Need to check the existance of the files before using as the files 
+    // will get generated only if  Task :core:jar is not being skipped
+    // Task :core:jar will be skipped if source files are unchanged or jar task is UP-TO-DATE
+    
+    if(file("${buildDir}/libs/core.jar").exists()){
+        // Copying core jar as zip inside the mode folder
+        Files.copy(file("${buildDir}/libs/core.jar").toPath(), 
             file("${coreZipPath}").toPath(), REPLACE_EXISTING)
+    }
     // Renaming artifacts for maven publishing
-    Files.move(file("${buildDir}/libs/core.jar").toPath(),
-               file("$buildDir/libs/processing-core-${modeVersion}.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("${buildDir}/libs/core-sources.jar").toPath(),
-               file("$buildDir/libs/processing-core-${modeVersion}-sources.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("${buildDir}/libs/core.jar.MD5").toPath(),
-               file("$buildDir/libs/processing-core-${modeVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    if(file("${buildDir}/libs/core.jar").exists()){
+        Files.move(file("${buildDir}/libs/core.jar").toPath(),
+            file("$buildDir/libs/processing-core-${modeVersion}.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("${buildDir}/libs/core-sources.jar").exists()){
+        Files.move(file("${buildDir}/libs/core-sources.jar").toPath(),
+            file("$buildDir/libs/processing-core-${modeVersion}-sources.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("${buildDir}/libs/core.jar.MD5").exists()){
+        Files.move(file("${buildDir}/libs/core.jar.MD5").toPath(),
+            file("$buildDir/libs/processing-core-${modeVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    }
 }
 
 ext {
diff --git a/mode/libraries/ar/build.gradle b/mode/libraries/ar/build.gradle
index 68b337b7..4fa13721 100644
--- a/mode/libraries/ar/build.gradle
+++ b/mode/libraries/ar/build.gradle
@@ -61,15 +61,28 @@ build.doLast {
     // Copying ar jar to library folder
     File arJar = file("library/ar.jar")
     arJar.mkdirs();
-    Files.copy(file("$buildDir/libs/ar.jar").toPath(),
-               arJar.toPath(), REPLACE_EXISTING);
+    
+    // Need to check the existance of the files before using as the files 
+    // will get generated only if Task ':mode:libraries:ar:jar' is not being skipped
+    // Task ':mode:libraries:ar:jar' will be skipped if source files are unchanged or jar task is UP-TO-DATE
+    
+    if(file("$buildDir/libs/ar.jar").exists()){
+        Files.copy(file("$buildDir/libs/ar.jar").toPath(),
+                   arJar.toPath(), REPLACE_EXISTING);
+    }
     // Renaming artifacts for maven publishing
-    Files.move(file("$buildDir/libs/ar.jar").toPath(),
-               file("$buildDir/libs/processing-ar-${arLibVersion}.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("$buildDir/libs/ar-sources.jar").toPath(),
-               file("$buildDir/libs/processing-ar-${arLibVersion}-sources.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("$buildDir/libs/ar.jar.MD5").toPath(),
-               file("$buildDir/libs/processing-ar-${arLibVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    if(file("$buildDir/libs/ar.jar").exists()){
+        Files.move(file("$buildDir/libs/ar.jar").toPath(),
+                   file("$buildDir/libs/processing-ar-${arLibVersion}.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("$buildDir/libs/ar-sources.jar").exists()){
+        Files.move(file("$buildDir/libs/ar-sources.jar").toPath(),
+                   file("$buildDir/libs/processing-ar-${arLibVersion}-sources.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("$buildDir/libs/ar.jar.MD5").exists()){
+        Files.move(file("$buildDir/libs/ar.jar.MD5").toPath(),
+                   file("$buildDir/libs/processing-ar-${arLibVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    }
 }
 
 ext {
@@ -81,4 +94,4 @@ ext {
     libDependencies = [[group: 'org.p5android', name: 'processing-core', version: modeVersion],
                        [group: 'com.google.ar', name: 'core', version: garVersion]]
 }
-apply from: "${rootProject.projectDir}/scripts/publish-module.gradle"
\ No newline at end of file
+apply from: "${rootProject.projectDir}/scripts/publish-module.gradle"
diff --git a/mode/libraries/vr/build.gradle b/mode/libraries/vr/build.gradle
index b3bb7aa5..61ccc0da 100644
--- a/mode/libraries/vr/build.gradle
+++ b/mode/libraries/vr/build.gradle
@@ -61,15 +61,28 @@ build.doLast {
     // Copying vr jar to library folder
     File vrJar = file("library/vr.jar")
     vrJar.mkdirs();
-    Files.copy(file("$buildDir/libs/vr.jar").toPath(),
-               vrJar.toPath(), REPLACE_EXISTING);
+    
+    // Need to check the existance of the files before using as the files 
+    // will get generated only if Task ':mode:libraries:vr:jar' is not being skipped
+    // Task ':mode:libraries:vr:jar' will be skipped if source files are unchanged or jar task is UP-TO-DATE
+    
+    if(file("$buildDir/libs/vr.jar").exists()){
+        Files.copy(file("$buildDir/libs/vr.jar").toPath(),
+                   vrJar.toPath(), REPLACE_EXISTING);
+    }
     // Renaming artifacts for maven publishing
-    Files.move(file("$buildDir/libs/vr.jar").toPath(),
-               file("$buildDir/libs/processing-vr-${vrLibVersion}.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("$buildDir/libs/vr-sources.jar").toPath(),
-               file("$buildDir/libs/processing-vr-${vrLibVersion}-sources.jar").toPath(), REPLACE_EXISTING);
-    Files.move(file("$buildDir/libs/vr.jar.MD5").toPath(),
-               file("$buildDir/libs/processing-vr-${vrLibVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    if(file("$buildDir/libs/vr.jar").exists()){
+        Files.move(file("$buildDir/libs/vr.jar").toPath(),
+                   file("$buildDir/libs/processing-vr-${vrLibVersion}.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("$buildDir/libs/vr-sources.jar").exists()){
+        Files.move(file("$buildDir/libs/vr-sources.jar").toPath(),
+                   file("$buildDir/libs/processing-vr-${vrLibVersion}-sources.jar").toPath(), REPLACE_EXISTING);
+    }
+    if(file("$buildDir/libs/vr.jar.MD5").exists()){
+        Files.move(file("$buildDir/libs/vr.jar.MD5").toPath(),
+                   file("$buildDir/libs/processing-vr-${vrLibVersion}.jar.md5").toPath(), REPLACE_EXISTING);
+    }
 }
 
 ext {
@@ -82,4 +95,4 @@ ext {
                        [group: 'com.google.vr', name: 'sdk-base', version: gvrVersion],
                        [group: 'com.google.vr', name: 'sdk-audio', version: gvrVersion]]
 }
-apply from: "${rootProject.projectDir}/scripts/publish-module.gradle"
\ No newline at end of file
+apply from: "${rootProject.projectDir}/scripts/publish-module.gradle"