Thank you Wasana and BlessIsaacola. I changed the permissions and reloaded the file but I'm still getting the same error.
Any other suggestions?

Quote Originally Posted by BlessIsaacola
Your problem is actually easy to fix because it's a folder permission issue. Change permission on your bmz_cache folder and the subfolders to 777 which I believe is the same permission on standard image folder for ZC install.

That will fix the problem.