I tried to install the Striking 3.0.6.1 Theme using the Upload file dialog from the Theme menu and yes I did used the striking.zip from within the zipfile that I downloaded from themeforest. As this was not working, I got an "Internal Server Error" and the info that I should contact my provider, I expanded the "striking.zip" file and FTPed the files and folders into the wp-content/themes/striking folder of my site. The Theme now showed up under the wp-admin control panel but when I activated it I could no longer access the site. I did a fresh install of wordpress after removing the DB and the Folders from the webspace. Upload of the striking.zip with the Admin Panel did not work even with a fresh install. I uploaded the files via FTP again. If I do a "Preview" of the Theme I get this error (see below), can anybody advise as to what might be the problem?
I retraced the instructions from the manual. Upload via the wp-admin panel is still not possible so I FTPed again. I than changed the permission on the cache folder as per instruction in the Manual. In a local test install of the Theme I had the permissions issue mentioned during the activation, so I tried it on the hosted site. I tested the preview of the Theme and the Error had disappeared. I than activated the Theme and it worked.
Well that allowed me to continue... so please close this Post