pagination addon install error

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The addon has appeared on the addon page, but when I go to 'download' I get the following error:

"The following errors occurred when attempting to process your request:

There was an error unpacking your file. Perhaps you have not uploaded a valid zip file, or you do not have zip installed."

I no point was I prompted to download anything via the payment process,not is there any relevent download in my 'downloads' folder, not anything in the C% 'packages' folder.

Thank you.

Kim