Packpaging failure '!bIsMap'

Development Platform & Builds
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1

Hi, we’re trying to cook the project for windows, but, it’s failing.
So far, we manage to fix all warnings the cook log was showing and we hit a point where we cannot move forward since we cannot find anything wrong with the cook log.

Some facts:

-it’s a ~70 days prototype, many files got included/deleted/renamed on this time.

-the game runs okay inside the editor, even on ‘standalone game’.

-same cook error happens on 4.14 and 4.15 engine version.

Cooking log

2

Hi Tercio,

Looking up this particular error, it seems to occur when assets are not being loaded due to some filename conflicts, along with some dependency issues related to some things that have been deprecated.

Since, as you have described, many assets in your project have been deleted, renamed, etc I would suggest the following:

  1. Make a back up of your entire Project Folder before proceeding
  2. Delete the intermediate and saved folders from the Project Folder remaining in your Unreal Projects folder
  3. Right-click on the Contents folder in the Content Browser and select “Fix up redirectors in folder”
  4. Save all
  5. Attempt to package
  6. If packaging fails, review log for “errors” to see if errors are the same or related to a specific file or files
  7. If the same, delete the DerivedDataCache folder from the engine directory (of the version you are packaging from)
  8. If packaging still fails, please post the latest output log as well as the project log
3

Hi , thanks for the reply.

We did all 8 steps but the issue persisted.

Then we went folder by folder on windows explorer and deleted all .assets of files which we already had deleted inside the engine but someway somehow they weren’t deleted on the hard drive.

After this we repeated all the process from the Step 2 and the cook completed successfully.