That yellow error sign is showing up

What steps will reproduce the problem?
1. Adding Existing Application
2. Selecting App
3. Hitting Run

What is the expected output? What do you see instead?
I expect to see Browse

I see a Yield sign/error sign instead.

What version of the product are you using? On what operating system?
Latest version on MAC OS X

Please provide any additional information below.
I see this when I look at edit for app:
application: PositivityPromoter
version: 1
runtime: python27
api_version: 1
threadsafe: false

env_variables:
  GCB_PRODUCT_VERSION: '1.8.0'

  # Enable collection of stats on numbers of calls to the datastore,
  # memcache, and email-sending backends.  Used for profiling CourseBuilder
  # to improve performance.  See
  # https://cloud.google.com/appengine/docs/python/tools/appstats
  GCB_APPSTATS_ENABLED: false

  # Regsitering 'certificate' after 'dashboard' for correct tab ordering.
  GCB_REGISTERED_MODULES:
    modules.activity_tag.activity_tag
    modules.admin.admin
    modules.analytics.analytics
    modules.announcements.announcements
    modules.assessment_tags.questions
    modules.balancer.balancer
    modules.code_tags.code_tags
    modules.core_tags.core_tags
    modules.course_explorer.course_explorer
    modules.courses.courses
    modules.data_source_providers.data_source_providers
    modules.dashboard.dashboard
    modules.certificate.certificate
    modules.data_pump.data_pump
    modules.extra_tabs.extra_tabs
    modules.i18n_dashboard.i18n_dashboard
    modules.invitation.invitation
    modules.manual_progress.manual_progress
    modules.mapreduce.mapreduce_module
    modules.math.math
    modules.notifications.notifications
    modules.oeditor.oeditor
    modules.questionnaire.questionnaire
    modules.rating.rating
    modules.review.review
    modules.search.search
    modules.skill_map.skill_map
    modules.unsubscribe.unsubscribe
    modules.upload.upload
    modules.usage_reporting.usage_reporting
    modules.oauth2.oauth2=disabled

includes:
- custom.yaml

inbound_services:
- warmup

builtins:
- remote_api: on
- deferred: on

libraries:
- name: jinja2
  version: "2.6"
- name: PIL
  version: "1.1.7"
- name: pycrypto
  version: "2.6"
- name: webapp2
  version: "2.5.2"
- name: webob
  version: "1.2.3"
- name: lxml
  version: "2.3"

handlers:
- url: /remote_api
  script: $PYTHON_LIB/google/appengine/ext/remote_api/handler.py
  login: admin
  secure: always
- url: /cron/.*
  script: main.app
  login: admin
  secure: always
- url: /mapreduce/worker/.*
  script: main.app
  login: admin
  secure: always
- url: /.*
  script: main.app
  secure: always

skip_files:
# GAE default patterns.
- ^(.*/)?#.*#$
- ^(.*/)?.*~$
- ^(.*/)?.*\.py[co]$
- ^(.*/)?.*/RCS/.*$
- ^(.*/)?\..*$
# CB-specific patterns.
- ^internal/.*$
Original issue reported on code.google.com by suni.n.j...@gmail.com on 12 Jun 2015 at 10:35
manniru / course-builder

That yellow error sign is showing up #78
