I have installed latest 4.5 version.I open a project from version 4.4.When I save via editor menu everything is ok.But if I do Ctrl + S save editor crushes.I have uploaded bug report via crash popup.
Hey SasMaster,
Thank you for your report. We have assigned this issue to a member of our support staff, and they will begin investigation as soon as possible. If we are unable to reproduce issue, or we need additional information, our staff member will comment here with additional questions. Otherwise, we will post an ‘Answer’ once we have logged issue in our bug database or we have a solution for it.
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Please and attach crash log and dump file for project after it crashes.
Thanks!
Are you saving with Ctrl+S in moment Editor tries to auto save? That crashed for me too. But i already reported that bug months ago.
If it crashs everytime, just ignore my comment.
SasMaster, can you tell me specifically which version of engine you’re using? I can’t replicate that issue on 4.5 release from launcher, which to me implies you’re using a different build or you have a hardware issue.
I am experiencing same problem. When i create new blueprint and try to Ctrl+S editor crashed, but if I press Save All in content browser there is no crash.
Problem exists in all 4.5 projects.
Hey vebski,
Can you get me your [crash log and dmp file][1]? That would help us find out what’s causing your crash.
[1]:
Hi,
We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing issue you reported, please respond to this message with additional information and we will offer further assistance.
Thank you.
Sorry man,had no time to test it.But if you confirm it is fixed now I believe you 
If you get time, please test it. I was never able to recreate issue myself, so I don’t know for certain that it is fixed.
Sorry for not a replaying long time, error occurred few time in meantime, but I had little time to deliver logs. And I got this error while working on my test project, right after creating new class, writing it and then compiling it. I created new blueprint and when I tried to Ctrl + S → breakpoint crash. thing is, crash log inside in Visual is different from generated one ( its not showing this error). Visual Log.
And unfortunately dump file was not generated this time
This crash report indicates that there are a bunch of files missing. Are you only seeing this crash in your custom project? It would be very helpful if you had consistent steps we could follow to reproduce bug.
Well it always pretty much what I described. It crashes when you create new C++ class, do something in it. Compile project, create new BP with this class and Ctrl+S. It doesn’t always crash.
I don’t know why it say’s files are missing because I have them 
I remember that this line:
Assertion failed: !DelegateInstanceInterface->IsSameFunction(*InDelegateInstance) [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\core\public\delegates\DelegateSignatureImpl.inl] [Line: 1827]
UE4Editor.exe has triggered a breakpoint.
is missing from generated (not VS) log files I was getting in other projects. I attached log file from same crash as you can see it’s different from VS log.
That log is definitely different, but it doesn’t appear to contain a crash. There were some errors/warnings, but without a log that includes a crash, I can’t see what is causing crash.