Indexhibit Support

I am setting up a new website for a friend, hosted on fasthost.
I have managed to set up the database, install indexhibit and change permissions. However I am unable to add any content to the website as I receive the following error:
filesource class not found
Having read previous threads about this I have changed the database to utf8_unicode_ci , but this has not resolved the issue.
Any advice would be much appreciated, thanks.

I contacted my web host who told me an error log shows that: htdocs/ndxzstudio/module/exhibits/index.php on line 233. is the problem, I still can not work out how to resolve this.

I have the same problem!