When i open up my project in unreal engine 5.4, it gives me the error code:
ssertion failed: !PackagePath.IsEmpty() [File:D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncPackage.h] [Line: 58]
I’d start by going into the project folder itself on your drive and delete folders such as ‘Intermediate’, ‘Saved’, and ‘Derived Cache’ and then try again. Try that first. If it fails to fix it you can also remove the DefaultEngine.ini in the config. But, don’t permanently delete it as if it’s not the issue, you’ll want to put it back. Let me know how it goes.
I have the exact same problem.
What I did is I made some modifications to the First Person Shooter map adding the door functionality according to this YT video:
and informations above objects according to this YT video:
When closing project it works fine, no warnings or errors, saves with no problem.
First time I made it in blueprint mode and I thought that maybe building from source would repair the issue so I made a new project in C++ mode and implemented those functionalities again.
What I tried to do to make project open:
deleting Int, Svd and DDC folders
removing Engine Version from AppData Local (as some people suggested in other threads)
removing DefaultEngine.ini
First and second does nothing.
Removing DefaultEngine.ini allows project to open with default empty map, but when opening the FirstPersonShooter map it again crashes with the same error.
If I duplicate map I get the save prompt and after saving both duplicated and original map do not cause crash, but are broken even after loading shaders:
