Uprade 4.1.13 not working | WordPress.org

Same problem here on a couple of sites,..
Firefox can’t find the file at https://downloads.projectdmc.org/plugin/ultimate-post.4.1.13.zip.

Hello dellos,

We have found the issue and already released a version which resolves the issue.
Kindly try to update again.

Thanks.

There’s been a problem on projectdmc.org plugins packaging servers, it has been fixed about 12 hours ago.
You may have encountered same issue with other recently updated plugins, but as i have mentioned, its been fixed.