Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
Assets
Summary
We are having an issue where some projects that have Material Parameter Collections, which were migrated from other projects in a previous version of UEFN, seem to cause crashes on load. If one of these projects is opened, no other project with MPCs can be opened without crashing until we delete all Unreal folders under ~user/Appdata/local/. The odd thing is, this doesn’t happen on every project, just a few specific ones. We’ve tried Fixing Up Redirectors and Resaving all assets, but the problem persists.
Steps to Reproduce
Open a project that has MPCs migrated in a previous version of UEFN. Open a new project that has the same MPCs.
Expected Result
Editor to open without a crash.
Observed Result
Editor crashes on open.
Platform(s)
Windows
Additional Notes
Appologize for this being so vague in terms of repro. The issues have been a bit inconsistent across projects, but there are 2 particular ones that are causing issues for us. We’d be happy to provide Epic with the repo to take a look at the specific MPCs causing issues.