Can't Access Demo Page after Downloading Theme

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After successfully downloading a theme (Superhero) and making a few minor changes (adding an image and a logo), I am now unable to log into the demo site. I receive the following fatal error message:

Posted by admin on November 15, 2012

Warning: require_once(/www/qtww/packages/problog/models/blogify.php): failed to open stream: No such file or directory in /www/qtww/concrete/core/libraries/loader.php on line 40 Fatal error: require_once(): Failed opening required '/www/qtww/packages/problog/models/blogify.php' (include_path='/www/qtww/libraries/3rdparty:/www/qtww/concrete/libraries/3rdparty:.:/usr/share/pear:/usr/share/php') in /www/qtww/concrete/core/libraries/loader.php on line 40

There is nothing else on the page but this message, no dashboard, no buttons, nothing. I cannot physically do anything at all with the site.
Help!

 
JohntheFish replied on at Permalink Reply
JohntheFish
You can usually get direct to the dashboard at:
yoursite.com/index.php/dashboard

Once in the dashboard, you can try any of
- change globally to a default theme
- uninstal an addon
- regress to a backup from before the problem

One of the above should get you working well enough to diagnose what the actual problem is, fix it, and then move forwards again.
webadministrator replied on at Permalink Reply
Thank you very much for your reply. I am a beginner (obviously) and really appreciate you taking the time to provide guidance.

I entered the address you provided (yoursite.com/index.php/dashboard) in my browser and it took me to the following location:

http://yoursite.com/?redir=frame&uid=yoursite50b3ab452fbef2.744...

Can you direct me where to go from here? I don't see where I can sign in to my dashboard or how to access it from this location.
JohntheFish replied on at Permalink Reply
JohntheFish
By yoursite.com, I mean the address of your home page, not the literal 'yoursite.com'.