Every time I try to import an FBX file into unreal, the engine crashes and has to be closed from Task Manager. Task Manager shows it as not responding. The engine freezes once the import options appear, at about 75%. I have seen the issue here before, but the solution to it was to re-install Windows and Unreal. As I don’t want to re-install my OS unless extremely necessary, I was wondering if anyone could give me a hand with it. Attached is a picture of the issue. Running Windows 10, Unreal 4.8.4. Also if it helps, the FBX files I am trying to import were not created by me, but were royalty free downloads.
This actually isn’t a crash. If it’s taking a while to import the model it’s just because it’s needing to be processed.
You can verify this by unchecking “combine meshes” in the Import options. If this comes in fairly quickly then it’s because the way the asset is being processed on import.
When importing any asset, especially those with many pieces, this process can take a while because the mesh has to be combined by writing a single piece to memory > saving > Triangulating and processing > and repeat the process for the next piece.
If it seems like it’s taking a while to import, just give it some time to finish processing. Task Manager may even show that the editor says “Not Responding”, but this is just that it’s still processing. Depending on the mesh this can take a while.
I cannot use any of the import options, as it stays frozen like that, so I cannot uncheck “Combine Meshes” and the same model loads almost instantly on my partners computer. I have also left the program running but it never actually does anything. I left it running for about 2 hours to no avail.
Once the import process starts and appears to be non-functional you cannot exit the import process without either force closing the editor or waiting it out.
Try Importing the asset after loading the editor up again and unchecking the option for Combine Meshes.
Would you also mind posting a link to the asset if it’s freely available. I can take a look there and see if anything seems out of place as well.
If you’re seeing a difference in import times between your partners computer and yours what is the difference in specs? Also, you mention 4.8.4 in your original post. There is only a 4.8.3, are you using the launcher or not for your editor? This may be helpful as well.
Apologies, the 4.8.4 was a typo. I meant 4.8.3. I am using the launcher to launch the engine. My specs and my partners specs are as follows
Partner: 2.4 GHz i7, 12 GB ram, gtx 640m from nvidia with Windows 7
Mine: 2.5 GHz i7, 16 GB ram, NVIDIA Geforce GTX 970m with 3GB GDDR5 VRAM with Windows 10
Also where is the option to combine meshes? I do not see that anywhere, as the import option box never fully loads upon everything freezing up and crashing.
As I have said before, I cannot use any of those FBX options due to my editor freezing before those even load. Unchecking the option to combine meshes is not an option for me. I cannot physically do it. See my original image above. The fbx import options loads a tiny little box that gets cut off and freezes. The box already has mesh expanded, but freezes before any of the other options, or the rest of the box, loads so I cannot use those options.
Yes when I refer to crashing, I mean the editor freezes and becomes completely unresponsive only to be closed from the task manager. Other things, such as print screen, also do not work once it has frozen. Print Screen takes an image of whatever is behind the editor instead of the editor.
I must have misunderstood that it was freezing as soon as the Import Options came up. I had thought this was clicking “import.”
Looking at the object you’ve linked, this isn’t a very complex mesh at all.
I was able to import it without any issue in less than a second. It seems like maybe there may be something corrupted with your install perhaps.
Looking back, I don’t see this mentioned that you’ve reinstalled. If that’s the case, can you try reinstalling the engine. 4.9 released today if you’re interested in trying that version.
I tried reinstalling 4.8.3 twice, 4.7.6 once, 4.9.0 Preview 4 once, and I just tried the full 4.9.0 release. None of that fixed the issue. 4.8.3 and 4.7.6 all had the same issue. 4.9.0 Preview 4 and 4.9.0 Final had the same issue, except now the import options box is invisable.
Can you post your DxDiag? Maybe try updating the drivers for the integrated graphics card and your Nvidia GPU to the latest version.
We’ve not had any reports of anything similar to this happening on any Win10 setups that I’m aware of off hand. We also only have a single desktop machine using Win10 at the moment, so we’re a little limited in testing if this is Win10 related or not at the moment.
So further questions:
This happens with any installation of UE4?
You can’t import anything without it freezing or is this only with this mesh?
I haven’t tried every single version of UE4, but the most recent three (4.7.6, 4.8.3, 4.9.0) all seem to have this issue. I cannot import any mesh or fbx object. They all cause this same bug. All of my graphics drivers are updated to the most current versions. Attached is my DxDiag as requestedlink text
I solved the issue. UE4 does not have DX12 support by default, so I discovered reading the release notes that could be activated by running it from the command line and adding -DX12 to the command. This solved the issue and allowed me to import normally.
