Premiere pro crushes when I try to flatten multicam or to export AAF

Hi @Vlad_7612 - You can find your settings at C:\Users\<username>\Documents\Adobe\Premiere Pro\<version>

Before deleting the <version> folder make a backup.  This will reset your settings.

Hi Jamie, 

I trashed preferences.   I am not sure  how to reset settings.

Thank you  I ll send the project!

Hi @Vlad_7612 - Can you send the project to jamiec@adobe.com so that we can take a look.  

Have you tried to reset your settings?

• Issue -  Premiere crushes when I try to flatten multicam video or multicam audio. Same when I try to make aaf from seq where I used multicam.
•  
• Adobe Premiere Pro version number:  any version from 2020 till 2025 does the same
• Operating system - Windows 10 Version 10.0.19045 Build 19045
• System Type       x64-based PC
• System Info: CPU, GPU, RAM, HD:
• CPU       2x Intel(R) Xeon(R) CPU E5-2637 v4 @ 3.50GHz, 3501 Mhz, 4 Core(s), 8 Logical Processor(s)
• GPU (Intel-based Macs and PCs) NVIDIA Quadro K1200
• GPU driver (PC)  553.35-quadro-rtx-desktop-notebook-win10-win11-64bit-international-dch-whql
• RAM  128 GB
• Hard Drive  PLEXTOR 2
• Video format:  proxy
• Workflow details:  When I try to flatten MC  premiere crushes.
• Steps to reproduce - (Very important!)   I have a bunch of multicam clips, and every time I try to flatten them, Premiere crashes.
• The same thing happens when I try to export an AAF. If the sequence contains multicam audio/video, Premiere crashes.
• It also crashes when I simplify the sequence and try to flatten the multicam.
• This issue persists across all versions of Premiere Pro, from 2020 to 2025, whenever I attempt to flatten a multicam sequence.
•  I tied to import the footage to new seq, doesn’t help
• I tried to import seq in new project, doesn’t help
• I tried to open on various Premiere versions from 2020 till 2025 same result
• I tried  to open project and seq  on different PC – same result
• Expected result -  Suppose to flatten MC to  single clip. Also suppose to export AAF
• Actual result -   crushes premiere

Sorry about that, and thanks for the bug report on my link! 🙂

I put the raw link on my post, but I see IanB has replied so use that.

Here is similar problem. 
https://www.reddit.com/r/premiere/comments/1as2cfm/help_working_with_multicam_sequences_created_the/

So far I found one  solution . I  replace  every clip  from source. It is painful especiall when I need to replace audio clips too and it takes long time.   It is feature film and it is a lot of clips needs to be replaced audio and video

After replacing the  each clip from source monitor I can flatten it without crushing premiere.  AAF export work too 

 But it is one by one  and it is +3 weeks of my work. 

would love to hear   about possible solutions

Hi! 

Sorry the link you provided doesnt work. (Invalid Parameters Specified)

please let me know what info you want me to add?

You're going to have to provided some additional information. Especially since this is not happenin to most of us. Here's what you need: 
https://community.adobe.com/t5/premiere-pro-discussions/faq-how-do-i-file-a-bug-report-or-write-a-feature-request/td-p/13362039