Any help would be great, the only major change I made since last successfully loading the project was to install a plugin called ‘Property Transfer Tool’. Soon as I enabled it and restarted my project started causing the engine to crash at 95% on the loading screen. Following error is all I really get in the crash reporter.
Assertion failed: d==(TileData + TileDataSize) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/NavigationSystem/Private/NavMesh/PImplRecastNavMesh.cpp] [Line: 574]
I tried removing the plugin from my engine and removing the reference from the .uproject file via notepad, still getting the same error.
Edit. This thread helped me get the project opening again. Project Crashed? How to Repair - Getting Started & Setup - Epic Developer Community Forums
Map I was working on is broken and seems to be beyond repair but at least my projects opening now.