[bug report]Creating transition rules in state machine crashes UE4

As shown in above video, UE4 freezes and does’t indicate transition rule icon when I create a transition rule, then very often UE4 crashes.
This bug occurs only when I create very complex and large state machine.

In the editor, every time you make a modification to your state machine, the whole state machine must be rebuilt. Complicate state machines take longer to build. Perhaps you could try splitting the large state machine into multiple smaller ones, and network them using a behavior tree, blueprint code, or even another state machine. The point of splitting them up is that typically the representation of a state machines transitions grows exponentially to the number of nodes within a state machine. So you may see considerable rebuild optimization by breaking the state machine up, and/or using a nested state machine approach.

Thanks to your reply.

(Definitely, I should split up AnimBP. But splitting up AnimBP also crashes UE4. So I can’t split them up at least in short time.)

UE4 should not crash even when it rebuild a large state machine. Crashes are problematic, few seconds of freezing doesn’t matter. One large AnimBP is sometimes ideal if UE4 doesn’t crash. Therefore I think epic should make UE4 not crash.

Can you attach a related log or crash report to your post?

Hi Horus_Ray666,

As has requested, I’d like to see your crash report as well as the log files in your project([PROJECTNAME]/Saved/Logs). Please ensure that you are hitting send on the CrashReporter window that appears after your crash so that we can look up your crash in our system.

-.

I am deeply sorry for the late reply.

I have attached the log file.
and fragmentary log of CrashReporter window.

Since last Update(4.10.4), UE4 ceased to crash except one crash soon after the update. So I couldn’t attach full CrashReporter log.

Hi Horus_Ray666,

Using the information you’ve provided I was able to see that the last crash you experienced (from that work station) was on February 23rd so it looks like what was causing the crash has been corrected with the latest hot fix. However, if the crashes return under the same or similar circumstances, feel free to reopen this post with an update. Until then, we are closing this for tracking purposes.

-.

UE4 crashes under the same circumstances today.
Error log is here. The bug is probably still not corrected.
link text

After cross referencing a couple of your crash reports from our Crash Reporter page I found a similar bug reported as JIRA [UE-18753]

In your project, do you have an Actor blueprint with a Floating Pawn Movement component?

There is no BP with a floating pawn movement component in my project.

The latest Crash Report we have submitted from your machine (03/24/2016) is unrelated to the crashes you were experiencing in February, but is a common crash among a lot of different users. Are you able to reproduce this crash on a consistent basis and, if so, can you provide us with repro steps?

I can’t reproduce the crash on a consistent basis. Even while I make over 5~10 transition rule arrows, sometimes UE4 does not crash and occasionally crashes. I am afraid that I have no idea what is the condition of it. According to task manager memory is enough.

The original video link is broken above. Can you send us a link to your project in a Private Message to me on our Forum?

Today I can’t reproduce the crash in 4.11. I think the crash was corrected with 4.10.4 hot fix. In the first place, the crash is perhaps caused by instantaneous memory shortage. I think we don’t need to investigate about this crash anymore.
I apologize for troubling you.