Reply To: Failed to construct hwtree for collect command

[Guilin Sun]

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.