I’m not able to load my level file anymore, when I try to load it through File->open level, it pops up saying ‘Failed to open map file. This is most likely because the map was saved with a newer version of the engine.’ (It wasn’t saved with a newer version), and when I try to just double click the level file in the project files browser, it crashes the editor.
It was working perfectly fine several hours ago… what may have caused this is: starting to build the lighting, cancelling the build, clicking to close the editor and selecting yes when it pops up asking whether it should save the map, waiting till the editor is closed, restarting the computer. At least that’s what I did right before it started crashing.
I was using 4.5.1 version of the engine. Any help fixing this issue would be really appreciated, as I stupidly haven’t made any backups of the map file in about a week…
Here’s the crash report:
MachineId:A94FB7A64C2A6F0CE1EFFDBC0E2D11A3 EpicAccountId:2d6adc34ffc246e69a5024ac8e60986a Unknown exception - code 00000001 (first/second chance not available) Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.5\Engine\Source\Runtime\Core\Private\HAL\FileManagerGeneric.cpp] [Line: 608] Invalid BufferCount=0 while reading ..//..//..//..//..//..//Users//Ed//Documents//Unreal Projects//A3D KERNELBASE + 37901 bytes UE4Editor_Core + 3174852 bytes UE4Editor_Core + 1677215 bytes UE4Editor_Core + 690023 bytes UE4Editor_Core + 808701 bytes UE4Editor_CoreUObject + 848220 bytes UE4Editor_CoreUObject + 1129316 bytes UE4Editor_CoreUObject + 1161231 bytes UE4Editor_CoreUObject + 930168 bytes UE4Editor_CoreUObject + 1002266 bytes UE4Editor_CoreUObject + 1424764 bytes UE4Editor_CoreUObject + 1535630 bytes UE4Editor_ContentBrowser + 1370711 bytes UE4Editor_ContentBrowser + 1735106 bytes UE4Editor_ContentBrowser + 1255123 bytes UE4Editor_ContentBrowser + 1294632 bytes UE4Editor_ContentBrowser + 1784182 bytes UE4Editor_ContentBrowser + 1227254 bytes UE4Editor_ContentBrowser + 1286539 bytes UE4Editor_ContentBrowser + 1276022 bytes UE4Editor_ContentBrowser + 1869215 bytes UE4Editor_ContentBrowser + 1784767 bytes UE4Editor_Slate + 818133 bytes UE4Editor_Slate + 754699 bytes UE4Editor_Core + 2505996 bytes UE4Editor_Core + 2450091 bytes UE4Editor_Core + 2510873 bytes UE4Editor_Core + 2438466 bytes user32 + 105425 bytes user32 + 104666 bytes UE4Editor_Core + 3157718 bytes UE4Editor!FEngineLoop::Tick() + 3106 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launchengineloop.cpp:2111] UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launch.cpp:133] UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:125] UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:201] UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]