Images missing or corrupt after uploading new site.

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Hi,

I have uploaded my concrete 5.6 site from the local server to my web host. Everything is working except all images in the site are either missing or garbled. Is this likely to be a permissions problem? The images are mostly jpeg. It also affects images used in the dashbord.

What permissions should I be checking and is there anything else which can affect images

Any help would be appreciated.

Cheers

Nigel