Minor bug in Paper2D

I made a flipbook and accidentally added an extra frame. I didn’t see a way to remove that frame, and didn’t want to delete all of them and start over. So I set the “Frame Run” field of the last, unwanted frame to 0. It seemed to play just fine in the preview window. However, I noticed that if in BP I tried to change the flipbook of my component to this one, it would crash the editor every single time without fail. I redid the anim, and now it works fine without any issues. Below is the stack trace in case it’s useful, although I’ve already submitted it a few times.

!Id:57182de6a7c13e207f6ca31b4dc2a521

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: !bPostTickComponentUpdate [File:\BuildFarm\buildmachine_++depot+UE4-Releases+4.2\Engine\Source\Runtime\Engine\Private\LevelTick.cpp] [Line: 703]

KERNELBASE + 37901 bytes
UE4Editor_Core + 2998748 bytes
UE4Editor_Core + 1620298 bytes
UE4Editor_Core + 1561376 bytes
UE4Editor_Engine + 5079251 bytes
UE4Editor_Paper2D + 70584 bytes
UE4Editor_Paper2D + 74302 bytes
UE4Editor_Renderer + 1343109 bytes
UE4Editor_Engine + 1770952 bytes
UE4Editor_Engine + 1639237 bytes
UE4Editor_Engine + 5132103 bytes
UE4Editor_Engine + 5161378 bytes
UE4Editor_UnrealEd + 1464870 bytes
UE4Editor_UnrealEd + 5375494 bytes
UE4Editor!FEngineLoop::Tick() + 3555 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launchengineloop.cpp:2091]
UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launch.cpp:132]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:207]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Thank you for your report. I will begin investigation into this issue as soon as possible. If I am unable to reproduce the problem, or I need more information, I or another staff member will follow up with some additional questions for you. Otherwise, I will post an ‘Answer’ once I have logged the issue in our bug database or we have a solution for it.

In the meantime, please be sure to review our suggestions for how to report a bug, and feel free to edit your post if you have additional information to provide:

Thank you.

Hi Architekt,

I’m going to mark this as resolved since you did say you did fix your issue. I’m going to still look into the issue and document that though.

I’m quoting your post from above for anyone else who may run into this issue as well:

So I set the “Frame Run” field of the
last, unwanted frame to 0. It seemed
to play just fine in the preview
window. However, I noticed that if in
BP I tried to change the flipbook of
my component to this one, it would
crash the editor every single time
without fail. I redid the anim, and
now it works fine without any issues.
Below is the stack trace in case it’s
useful, although I’ve already
submitted it a few times.

Thank you for your report!

Tim