Not sure if you are aware of it but the Concord 4 plugin is currently not available for download on your host server. Error 404 server not found error message is reporting.
Are you using Dropbox for hosting. I believe there was changes made in how files are stored on their server that may be affecting the ability to download.
Are you using Dropbox for hosting. I believe there was changes made in how files are stored on their server that may be affecting the ability to download.
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