Updated to 4.9, playing my project no longer works

Development Platform & Builds
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1

title says it all, when I try to preview my project whole editor just crashes now. I kinda need to play my game to make it so I’d like to know why this happens or if it can be patched or if I can downgrade my project to 4.8 to fix it or something

2

Hi ,

I’ve assigned a member of our support staff to look into this crash for you, and they’ll post here if they need more information. Please copy information in Crash Reporter window, including Machine ID, so we can look that up here. Make sure you hit Send! Then and attach log from project’s Saved\Logs folder. Thanks!

3

Here’s log file link text

I sent two error reports, hopefully they get seen!

4

Hello ,

I was unable to reproduce this issue on our end. I have a a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. When upgrading to preview of 4.9, did you convert in place or open a copy?
  2. Can you reproduce this issue in a clean project?
  3. If so, could you provide a detailed set of steps in order to reproduce this issue on our end?
  4. What version did you upgrade your project from?
  5. Could you provide crash log that you receive when editor crashes?
  6. Could you try going through your blueprints one by one and use “Refresh all nodes” feature (Open blueprint > File > Refresh all nodes)?

Please note that we do not recommend developing inside of a preview build, preview is considered to be unstable. preview is to for testing out features that will be available in next release.

5

I converted in place, I didn’t realize 4.9 was a preview build at time so I thought it’d be fine to update my project. I updated from 4.8.3. crash report is this link text
I wish I could reproduce it, but I have no idea where problem stems from, there’s a lot going on in my game and I don’t even know where to begin to reproduce it. Is there a way to downgrade my project back to 4.8.3?

6

Hello ,

You could navigate to where your project is stored and switch engine version back to 4.8. This will at least get your project out of preview build. However, this may not resolve any errors that you are currently having. After this, if crash is still occurring I would suggest going through your code and refreshing all of your nodes.

Right click .uproject > Switch Engine Version

52956-engineswitchbackhelp1.png
52956-engineswitchbackhelp1.png992×554 41 KB

Select 4.8 version of engine

52957-engineswitchbackhelp2.png

Double click .uproject to open project. project should now be back in 4.8.3

7

Thank you, I did actually go refresh all nodes but it didn’t seem to do anything. Keep in mind game worked perfectly fine seconds before update, only change I made was updating engine and then converting project when I was prompted to. Switching engine version made map fail to load because map was last saved in 4.9, so I’m gonna try and remake map and then see if that works

8

Hello ,

Let me know what happens after remaking map and I will be happy to assist you further after receiving more information.

9

Hello ,

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.