# Lore check-in always fails with "rehashing commit ... (os error 2)" - repository has duplicate folder nodes, no successful check-in since Sep 1 **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, UEFN, bug-report, fortnite\ **Created:** [October 22, 2026, 5:27pm UTC](https://forums.unrealengine.com/t/lore-check-in-always-fails-with-rehashing-commit-os-error-2-repository-has-duplicate-folder-nodes-no-successful-check-in-since-sep-1/2843946 "2026-10-22T17:27:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![riquelme\_in\_kbm](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@riquelme\_in\_kbm](https://forums.unrealengine.com/u/riquelme_in_kbm)\ **Post date:** [October 22, 2026, 5:27pm UTC](https://forums.unrealengine.com/t/lore-check-in-always-fails-with-rehashing-commit-os-error-2-repository-has-duplicate-folder-nodes-no-successful-check-in-since-sep-1/2843946/1 "2026-10-22T17:27:30Z")
### Summary Lore check-in always fails with “rehashing commit … (os error 2)” - repository has duplicate folder nodes, no successful check-in since Sep 1 ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Lore ### Steps to Reproduce 1. Open my project PansPracticeMap7. 2. Click Check In. 3. Lore creates an automatic backup commit on my personal branch, then the merge into main fails. ### Expected Result Check-in succeeds and main gets my current project state. ### Observed Result Check-in fails every time with: rehashing commit: The system cannot find the file specified. (os error 2) at lore-storage\src\error.rs:7 - open file: …\Content\KavookS\T\_KS\_Gi\_Speed.uasset at lore-revision\src\immutable.rs:417 - writing immutable content from file at lore-revision\src\commit.rs:1951 - Failed writing file Content/KavookS/T\_KS\_Gi\_Speed.uasset to immutable store at lore-revision\src\branch\merge.rs:3864 - rehashing commit Details: - Last successful check-in to main: revision 905, Sep 1 2026. - Since then 39 automatic backup commits (revisions 906-944) piled up on my personal branch and never merged into main. - About 3,890 files were deleted from disk after those backups. The merge still tries to read them from disk and aborts on the first missing one. - “lore repository verify state” reports “Multiple nodes have identical name” for 23 folders (e.g. Content/ **ExternalActors** , Content/Meshes, Content/UIse, Content/PieceSection, Content/EditSystem, Content/Assets\_1v1). - 3,048 of the deleted files are inside those duplicated folders. “lore stage ” fails for them with “Invalid path”, so I cannot register the deletions. - After the failed check-in, the project got stuck at “OpenProject\_ConnectRevisionControl - Begin” on open. “lore status --reset” fixed the opening, but check-in still fails. - This looks like FORT-1155571 (thread “Lore checkout error”, marked fixed for 43.00 / 44.20). I am on 42.40 (CL 59343437), Lore client 0.8.6-nightly+338\_3666. I need check-in working to share the project with a team member. My local files are complete (I have a full backup). Could someone repair the duplicated folder nodes on the server side, or tell me a safe way to make my current local state the new main revision without losing the link to my published island? Thanks! ### Platform(s) windows ### Island Code 3916-5715-6958 ### Additional Notes The project opens and publishes normally; only check-in is broken. I can provide full Lore.log and editor logs if needed. Please do not suggest Revert / Sync Latest, since that would overwrite my current local work. ---
**Author:** ![wouter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wouter/32/1036116_2.png) [@wouter](https://forums.unrealengine.com/u/wouter)\ **Post date:** [October 23, 2026, 9:34am UTC](https://forums.unrealengine.com/t/lore-check-in-always-fails-with-rehashing-commit-os-error-2-repository-has-duplicate-folder-nodes-no-successful-check-in-since-sep-1/2843946/2 "2026-10-23T09:34:29Z")
- Close uefn - Open the project folder (in windows explorer) - Delete `.lore` (or `.urc`) folder (move it to another location as a backup) - Reopen the project in UEFN (might take a while) - Try again check in changes Could you let us know if this works? ---
**Author:** ![riquelme\_in\_kbm](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@riquelme\_in\_kbm](https://forums.unrealengine.com/u/riquelme_in_kbm)\ **Post date:** [October 31, 2026, 6:38pm UTC](https://forums.unrealengine.com/t/lore-check-in-always-fails-with-rehashing-commit-os-error-2-repository-has-duplicate-folder-nodes-no-successful-check-in-since-sep-1/2843946/3 "2026-10-31T18:38:13Z")
Thanks for the help! I tried that (moving the .lore folder out and reopening), but instead of fixing the check-in, UEFN started syncing to latest from the server. The last real check-in of this project on the server is from Sep 1 (rev 905), so it started overwriting my current local map with that old version (4,315 files downloaded, 1,228 replaced). I stopped it and restored everything from a backup. The same fix worked on another project where the server was up to date. Is there a way to rebuild/reconnect the local repository WITHOUT syncing from the server, so my current local files become the new revision? Or could you repair the repository on your side? The check-in fails with “rehashing commit … os error 2” and “Invalid path” (the repo seems to have duplicate folder nodes).