Friends of InterAkt Extensions

Couple of days back after I uploaded a new article on my website I noticed that thumbnails are not generated anymore or at least that what I've observed. Site breaks down and stops working at the line where it should be a thumbnail. Same in the administration. Down from where a thumbnail should have been everthing is missing.
I enabled php error reporting and got this:
<img src="/
Warning: phpinfo() has been disabled for security reasons in /public_html/includes/common/lib/image/KT_Image.class.php on line 1961

I'm not even sure if this is what's causing my site to crash. But all I can do is try to find a solution for this and see what's next.

I'm thinking the hosting company is to blame for this. There's a function on line 1961 that uses phpinfo. What the hell do I do now? Is there a way to repair this so that it doesn't use phpinfo or Any Solution?

Yea I would think your host is to blame for this.
Now why would they disable the phpinfo() function?

Look in your cpanel at the raw error log. you will most likely find the issue there.
Isn't there and error log in the folder where the script is running?

Alternatively ask your host to check what the problem is. After all they disabled some functions.