Quick answer: Move and rename assets within the engine so it updates references, fix up references after moves, and keep reference-tracking metadata in version control.
Asset references breaking after moving files is moving outside the engine. Here is how to fix it.
How to fix it
1. Move assets within the engine
Move and rename assets in the engine's project browser, not the OS file system, so the engine updates all references to the new path. Moving files externally leaves references pointing at the old location.
2. Fix up references after moves
If references break (or after an external move), use the engine's fix-up or reference-repair tools to repoint them. In Unreal, fix up redirectors; in other engines, re-link broken references.
3. Track metadata in version control
Keep the reference-tracking metadata (Unity .meta files, engine import data) in version control so references survive across team members. Missing or untracked metadata is a common cause of references breaking after moves.
Catching the ones you can't reproduce
The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.
Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.
This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.
A crash you can name from its stack trace is a crash you can usually fix in minutes.