Problems with saving

[Anonymous]

Good afternoon. I'm trying to save the work and I see this error:
http://c2n.me/3PNO4Sy

[James.Youmatz]

Hi @Anonymous,

Welcome to the Fusion 360 Community!

Do you have any T-Spline entities in this model? Also, let's focus on getting a back up or save of this model first and then we can start addressing why this is happening. Are you able to go to the File menu and export a .f3d or step file? Once exported, ensure that you can open this file back up in Fusion successfully. If it does not work, please let me know so we can take a deeper peek at the open file and see what might be triggering this.

Thanks,