Images in themes don't show up

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Hi,
I'm an incredibly new noobie, and I'm trying to start a new webpage hosted on MacHighway. I installed concrete5 and been able to set up the webpage, but regardless of which of the pre-installed themes I use, none of the images that come with the theme will show up-- I'm using Plain Yogurt and there's just a black spot where the pretty trees should be. All of the themes are doing the same thing.

I appreciate any help!
MJ

 
Mnkras replied on at Permalink Reply
Mnkras
make sure the /files directory is chmoded 777 recursivly
benedictgarrett replied on at Permalink Reply
Can you explain that to me, please. I'm having the same problem, but what you wrote makes no sense to me.

Treat me as a complete layman, please.
hemantyadav replied on at Permalink Reply
Would you please share the url..