diff --git a/src/frontend/packages/devkit/src/build/extensions.ts b/src/frontend/packages/devkit/src/build/extensions.ts
index 1b4816edd3..93c42193f1 100644
--- a/src/frontend/packages/devkit/src/build/extensions.ts
+++ b/src/frontend/packages/devkit/src/build/extensions.ts
@@ -23,7 +23,7 @@ export class ExtensionsHandler {
   public apply(webpackConfig: any, config: StratosConfig, options: any) {
 
     // Generate the module file to import the appropriate extensions
-    const dir = path.dirname(options.main);
+    const dir = path.join(config.rootDir, path.dirname(options.main));
     const overrideFile = path.resolve(path.join(dir, './_custom-import.module.ts'));
 
     fs.writeFileSync(overrideFile, '// This file is auto-generated - DO NOT EDIT\n\n');
diff --git a/src/frontend/packages/devkit/src/lib/stratos.config.ts b/src/frontend/packages/devkit/src/lib/stratos.config.ts
index 3e47b52281..29b93bc091 100644
--- a/src/frontend/packages/devkit/src/lib/stratos.config.ts
+++ b/src/frontend/packages/devkit/src/lib/stratos.config.ts
@@ -19,6 +19,8 @@ export class StratosConfig implements Logger {
   public nodeModulesFile: string;
   public angularJsonFile: string;
 
+  public rootDir: string;
+
   // angular.json contents
   public angularJson: any;
 
@@ -44,6 +46,9 @@ export class StratosConfig implements Logger {
     this.angularJson = JSON.parse(fs.readFileSync(this.angularJsonFile, 'utf8').toString());
     this.loggingEnabled = loggingEnabled;
 
+    // Top-level folder
+    this.rootDir = path.dirname(this.angularJsonFile);
+
     // The Stratos config file is optional - allows overriding default behaviour
     this.stratosConfig = {};
     if (this.angularJsonFile) {
@@ -65,22 +70,20 @@ export class StratosConfig implements Logger {
     // Exclude the default packages... unless explicity `include`d
     this.excludeExamples()
 
-    const mainDir = options ? path.dirname(options.main) : dir;
-
-    this.packageJsonFile = this.findFileOrFolderInChain(mainDir, 'package.json');
+    this.packageJsonFile = this.findFileOrFolderInChain(this.rootDir, 'package.json');
     if (this.packageJsonFile !== null) {
       this.packageJson = JSON.parse(fs.readFileSync(this.packageJsonFile, 'utf8').toString());
     }
 
-    this.nodeModulesFile = this.findFileOrFolderInChain(mainDir, 'node_modules');
+    this.nodeModulesFile = this.findFileOrFolderInChain(this.rootDir, 'node_modules');
 
-    this.gitMetadata = new GitMetadata(path.dirname(this.angularJsonFile));
+    this.gitMetadata = new GitMetadata(this.rootDir);
     // this.log(this.gitMetadata);
     if (this.gitMetadata.exists) {
       this.log('Read git metadata file');
     }
 
-    this.newProjectRoot = this.angularJson.newProjectRoot;
+    this.newProjectRoot = path.join(this.rootDir, this.angularJson.newProjectRoot);
 
     // Discover all packages