August 2, 2024 at 5:44 pm
Guilin Sun
Ansys Employee

It seems it is the computer software issue, not  FDTD. Suggested solutions:

1: restart the FDTD project files

2: restart your computer

3: install all the OS updates

4: reinstall the FDTD software.

Can this problem duplicate for a different fsp file?  or only this file?

if it is only for this file, you can copy all the objects other than FDTD and paste to a newly created project file. and add FDTD again and see if it can work.

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