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fpwong / BlueprintAssistWiki

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[Crash] EXCEPTION_ACCESS_VIOLATION (FormatText Related?) #181

Closed tshabi8 closed 2 weeks ago

tshabi8 commented 1 month ago

UE: 5.1.1 Plugin Version: 4.2.14

It happens on a pretty complex bp with some FormatText and switch nodes. Tried multiple times.

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

UnrealEditor_BlueprintAssist!FKnotTrackCreator::CreateKnotNode() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\KnotTrackCreator.cpp:919] UnrealEditor_BlueprintAssist!FKnotTrackCreator::CreateKnotTracks() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\KnotTrackCreator.cpp:203] UnrealEditor_BlueprintAssist!FKnotTrackCreator::FormatKnotNodes() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\KnotTrackCreator.cpp:45] UnrealEditor_BlueprintAssist!FEdGraphFormatter::FormatNode() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\EdGraphFormatter.cpp:330] UnrealEditor_BlueprintAssist!FBAGraphHandler::FormatNodes() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:3308] UnrealEditor_BlueprintAssist!FBAGraphHandler::UpdateNodesRequiringFormatting() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:2562] UnrealEditor_BlueprintAssist!FBAGraphHandler::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:468] UnrealEditor_BlueprintAssist!FBATabHandler::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistTabHandler.cpp:53] UnrealEditor_BlueprintAssist!FBAInputProcessor::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistInputProcessor.cpp:100] UnrealEditor_Slate!FSlateApplication::FinishedInputThisFrame() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1387] UnrealEditor!FEngineLoop::Tick() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5353] UnrealEditor!GuardedMain() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Launch.cpp:202] UnrealEditor!GuardedMainWrapper() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:107] UnrealEditor!LaunchWindowsStartup() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:244] UnrealEditor!WinMain() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282] UnrealEditor!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] kernel32 ntdll

fpwong commented 1 month ago

Hi, I just submitted a fix for this now. Will let you know when it's live on the marketplace.

fpwong commented 1 month ago

Should be fixed in 4.2.18 https://github.com/fpwong/BlueprintAssistWiki/releases/tag/4.2.18

tshabi8 commented 1 month ago

Still crashing (UE 5.1.1, Plugin 4.2.18): Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000 UnrealEditor_BlueprintAssist!FKnotTrackCreator::CreateKnotTracks() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\KnotTrackCreator.cpp:244] UnrealEditor_BlueprintAssist!FKnotTrackCreator::FormatKnotNodes() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\KnotTrackCreator.cpp:72] UnrealEditor_BlueprintAssist!FEdGraphFormatter::FormatNode() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistFormatters\EdGraphFormatter.cpp:330] UnrealEditor_BlueprintAssist!FBAGraphHandler::FormatNodes() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:3320] UnrealEditor_BlueprintAssist!FBAGraphHandler::UpdateNodesRequiringFormatting() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:2553] UnrealEditor_BlueprintAssist!FBAGraphHandler::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistGraphHandler.cpp:468] UnrealEditor_BlueprintAssist!FBATabHandler::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistTabHandler.cpp:53] UnrealEditor_BlueprintAssist!FBAInputProcessor::Tick() [C:\Source\UnrealEngine5.1\Engine\Plugins\Marketplace\BlueprintAssist\Source\BlueprintAssist\Private\BlueprintAssistInputProcessor.cpp:100] UnrealEditor_Slate!FSlateApplication::FinishedInputThisFrame() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:1387] UnrealEditor!FEngineLoop::Tick() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5353] UnrealEditor!GuardedMain() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Launch.cpp:202] UnrealEditor!GuardedMainWrapper() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:107] UnrealEditor!LaunchWindowsStartup() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:244] UnrealEditor!WinMain() [C:\Source\UnrealEngine5.1\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282] UnrealEditor!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] kernel32 ntdll

fpwong commented 1 month ago

Apologies, after some testing even if I fix this nullptr crash there will still be serious issues with the formatting. Post formatting, it will end up disconnecting the wires that used to be linked.

It might take some more time but it would be better to figure out the root cause of this crash.

Some things that may help resolve / debug this issue:

fpwong commented 2 weeks ago

Hi @tshabi8, I pushed a fix for this in 4.2.21. Please let me know if it avoided the crash.

tshabi8 commented 2 weeks ago

Yeah it's fixed now! thanks