Hey Sandy, I can work on getting that for you - I am working with legacy solids/pipeline definitions here if that matters at all. To be more descriptive, I have a workspace with repos A,B,C, all of which are written with solids and pipelines, and which are part of a working deployment at the moment on version 0.12.9, and these repos are defined using the 'load_from - python_file' syntax. After upgrading the dagster version I can only run dagit with the typical dagit -w <workspace.yaml> file if I set up the workspace to only contain A, B, or C, but any combination fails. If i can get a minimum reproducible error without the domain logic of the pipelines I will provide you with that - at the moment not sure where to start narrowing down.