I downloaded packages with 2.457.2.2 to the local disk and then, I tried to install them with the new 2.510.2.2 And I only get the attached error without any help what to do. Also, removing the offending file doesn't help because that doesn't appear to be a corruption, but a systematic flaw with all files.
Created attachment 119827 [details] cywinError.png
Closing bugs for old packages that don't have a maintainer.