Thanks for your reply and feedback. Please provide your ctProject and crash dump file to help us identify the problem. Download the zip file with the link below, inside the zip you can find the description about how to generate the crash dump. https://ftp.reallusion.com/reallusionsupport/CTA5_WER_Crash_Dump.zip Please describe the issue in a detailed step-by-step operation for us to reproduce. and capture a screen video about this issue, put it on the YouTube, and add the link in your next comment. You can attach the file in your next comment. If the file size is larger than 10MB, you can use cloud services such as Google Drive, Dropbox or OneDrive to make the files available to us and put the link in your comment. you can use private comment if you want to keep it private. Allen Reallusion