Hello, As part of a reviewer request for our manuscript, we are attempting to generate map-to-model FSCs for two low-resolution cryo-EM reconstructions—one at 10 Å and the other at 20 Å. We’re encountering an issue when using mtriage(both standalone and as part of the comprehensive cryo-EM validation pipeline), where the map-to-model FSC values are reported as “None”. For the 10 Å map, we were able to obtain a valid halfman-halfmap AND map-model FSC by supplying the two half-maps rather than the final unfiltered reconstruction. However, this approach has not worked for the 20 Å map, and we are still unable to retrieve a map-to-model FSC. I initially suspected the issue might be related to masking, but it appears that mtriage does not support the use of a user-provided mask. If you have any insight into what might be causing this or suggestions for alternative approaches, we would greatly appreciate your input. thanks best Jesse Hansen