diff --git a/packages/@ngtools/webpack/src/entry_resolver.ts b/packages/@ngtools/webpack/src/entry_resolver.ts
index 32430d7e6961..c8ba5a7d786e 100644
--- a/packages/@ngtools/webpack/src/entry_resolver.ts
+++ b/packages/@ngtools/webpack/src/entry_resolver.ts
@@ -97,6 +97,8 @@ function _symbolImportLookup(refactor: TypeScriptFileRefactor,
       (decl.moduleSpecifier as ts.StringLiteral).text,
       refactor.fileName, program.getCompilerOptions(), host);
     if (!resolvedModule.resolvedModule || !resolvedModule.resolvedModule.resolvedFileName) {
+      throw new Error('Could not resolve module name. Is '
+        + (decl.moduleSpecifier as ts.StringLiteral).text + ' installed?');
       return null;
     }
 
@@ -134,6 +136,7 @@ export function resolveEntryModuleFromMain(mainPath: string,
     .map(node => node as ts.CallExpression)
     .filter(call => {
       const access = call.expression as ts.PropertyAccessExpression;
+
       return access.kind == ts.SyntaxKind.PropertyAccessExpression
           && access.name.kind == ts.SyntaxKind.Identifier
           && (access.name.text == 'bootstrapModule'
@@ -145,7 +148,7 @@ export function resolveEntryModuleFromMain(mainPath: string,
   if (bootstrap.length != 1) {
     throw new Error('Tried to find bootstrap code, but could not. Specify either '
       + 'statically analyzable bootstrap code or pass in an entryModule '
-      + 'to the plugins options.');
+      + 'to the plugins options. I has ' + bootstrap.length + ' bootstraps muahahaha');
   }
   const bootstrapSymbolName = bootstrap[0].text;
   const module = _symbolImportLookup(source, bootstrapSymbolName, host, program);
@@ -156,5 +159,5 @@ export function resolveEntryModuleFromMain(mainPath: string,
   // shrug... something bad happened and we couldn't find the import statement.
   throw new Error('Tried to find bootstrap code, but could not. Specify either '
     + 'statically analyzable bootstrap code or pass in an entryModule '
-    + 'to the plugins options.');
+    + 'to the plugins options. fell out');
 }
diff --git a/packages/angular-cli/lib/config/schema.json b/packages/angular-cli/lib/config/schema.json
index c8626d1aac1d..6bb54cb5b528 100644
--- a/packages/angular-cli/lib/config/schema.json
+++ b/packages/angular-cli/lib/config/schema.json
@@ -65,6 +65,9 @@
           "prefix": {
             "type": "string"
           },
+          "app": {
+            "type": "string"
+          },
           "mobile": {
             "type": "boolean"
           },
diff --git a/packages/angular-cli/utilities/dynamic-path-parser.js b/packages/angular-cli/utilities/dynamic-path-parser.js
index e362da26f864..8d5444d34fec 100644
--- a/packages/angular-cli/utilities/dynamic-path-parser.js
+++ b/packages/angular-cli/utilities/dynamic-path-parser.js
@@ -5,19 +5,21 @@ var fs = require('fs');
 module.exports = function dynamicPathParser(project, entityName) {
   var projectRoot = project.root;
   var sourceDir = project.ngConfig.apps[0].root;
-  var appRoot = path.join(sourceDir, 'app');
+
+  var appPart = project.ngConfig.apps[0].app || 'app'
+  var appRoot = path.join(sourceDir, appPart);
   var cwd = process.env.PWD;
 
   var rootPath = path.join(projectRoot, appRoot);
 
   var outputPath = path.join(rootPath, entityName);
-  
+
   if (entityName.indexOf(path.sep) === 0) {
     outputPath = path.join(rootPath, entityName.substr(1));
   } else if (cwd.indexOf(rootPath) >= 0) {
     outputPath = path.join(cwd, entityName);
   }
-  
+
   if (!fs.existsSync(outputPath)) {
     // Verify the path exists on disk.
     var parsedOutputPath = path.parse(outputPath);
@@ -33,12 +35,12 @@ module.exports = function dynamicPathParser(project, entityName) {
       } else if (fs.existsSync(withPlus)) {
         return withPlus;
       }
-      
+
       throw `Invalid path: "${withoutPlus}"" is not a valid path.`
     }, parsedOutputPath.root);
     outputPath = path.join(newPath, parsedOutputPath.name);
   }
-  
+
   if (outputPath.indexOf(rootPath) < 0) {
     throw `Invalid path: "${entityName}" cannot be ` +
         `above the "${appRoot}" directory`;
@@ -47,7 +49,7 @@ module.exports = function dynamicPathParser(project, entityName) {
   var adjustedPath = outputPath.replace(projectRoot, '');
 
   var parsedPath = path.parse(adjustedPath);
-  
+
   if (parsedPath.dir.indexOf(path.sep) === 0) {
     parsedPath.dir = parsedPath.dir.substr(1);
   }
diff --git a/packages/angular-cli/utilities/find-parent-module.ts b/packages/angular-cli/utilities/find-parent-module.ts
index 7a2273e19068..d638a26a6707 100644
--- a/packages/angular-cli/utilities/find-parent-module.ts
+++ b/packages/angular-cli/utilities/find-parent-module.ts
@@ -3,10 +3,11 @@ import * as path from 'path';
 const SilentError = require('silent-error');
 
 export default function findParentModule(project: any, currentDir: string): string {
-  const sourceRoot = path.join(project.root, project.ngConfig.apps[0].root, 'app');
+  const appPart = project.ngConfig.apps[0].app ? project.ngConfig.apps[0].app : 'app';
+  const sourceRoot = path.join(project.root, project.ngConfig.apps[0].root, appPart);
 
   // trim currentDir
-  currentDir = currentDir.replace(path.join(project.ngConfig.apps[0].root, 'app'), '');
+  currentDir = currentDir.replace(path.join(project.ngConfig.apps[0].root, appPart), '');
 
   let pathToCheck = path.join(sourceRoot, currentDir);