Error when open Alias in 3DEXCITE r2018, do you know the reason?

Hello.

One of our customers meets this issue.

Error message: An unhandled exception was caught while processing messages. It may be unsafe to continue your work.

the user wants to import Alias model (they tested Alias 2014 ~ 2020) to 3DEXCITE R2018. then, there is the error message.

Do you know how to fix it?

thank you!

xiaodong