On Proget build proget.inedo.com/productimages/inedo/proget:5.3.10 - RPM repository works as expected.

After update to 5.3.11+ including newest 5.3.26 I am getting following error.

| info: Microsoft.AspNetCore.Hosting.Diagnostics[1]
proget        |       Request starting HTTP/1.1 PUT http://XXX/rpm/rpm-dev/RPM-TEST-0.4.52-1.el7.x86_64.rpm - 345255284
proget        | Error installing package: Invalid header header.
proget        | A 400 error occurred in rpm-dev: Unable to parse package header. The supplied package may be an invalid RPM file.
proget        | An error occurred processing a PUT request to http://XXX/rpm/rpm-dev/RPM-TEST-0.4.52-1.el7.x86_64.rpm: Unable to parse package header. The supplied package may be an invalid RPM file.

In the changelog I do not see any RPM-related change, maybe PG-1815 - Update InedoLib to v950.0.5.

RPM is built on Centos 7 with rpm-build .