Error: Uncaught SyntaxError: Unexpected token u

3 posts, 1 answers
  1. JoPi
    JoPi avatar
    8 posts
    Member since:
    Dec 2006

    Posted 30 Apr 2015 Link to this post


    I'm currently trialling AppBuilder and have successfully stepped my way through 3 tutorials and started my own app.  What I've built has worked fine over last few days.  However, today I can't open any of my projects (tutorials or new project)  I'm using the browser AppBuilder and get as far as seeing my files on the right in the Project Navigator.  When I try to open any of them, I get the following error in Output window

    Error: Uncaught SyntaxError: Unexpected token u (URL:<Project Name>

     Internet here is fine.  Any suggestions?

  2. Answer
    Kaloyan avatar
    871 posts

    Posted 30 Apr 2015 Link to this post

    Hi Joth,

    We have several reports about the same issue after the yesterdays AppBuilder release. It seems like the browser's LocalStorage has something cached that prevents the normal usage of the AppBuilder In-Browser client. This said, I would suggest you to clear the cache and browsing cookies for both and Next are the complete steps, you will need to perform in order to do that:
    • In all browsers, log out from and
    • Clear the cache and your browser cookies for and in all browsers. In Google Chrome, please make sure to select clear cookies from beginning of time.
    • To clear the local storage data you will need to open our In-Browser Client (from your Telerik Platform account), hit F12 (to open the developer tools) and navigate to Resources. There, you should see the Local Storage pane in the left. Expand it and select the storage. Please, delete everything inside

    I hope this helps.


    Visit the Telerik Verified Plugins Marketplace and get the custom Cordova plugin you need, already tweaked to work seamlessly with AppBuilder.

  3. Josh
    Josh avatar
    1 posts
    Member since:
    Sep 2015

    Posted 05 Oct 2015 in reply to Kaloyan Link to this post

    Sounds like someone is trying to JSON.parse "undefined" :)
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