You Multiwfn version is too old, please download latest version.
Both ORCA 4.x and 5.x are OK.
Best regards,
Tian
]]>To perform the ETS-NOCV I see you need Orca so that you can convert the gbw files to Molden files as input. I also notice in the multiwfn application software there is no option 23 to perform the ETS-NOCV. I tried to re-install the multiwfn package but unfortunately it wasn't formatted. As there are several versions of Orca software, which version can I install and how can I re-install a formatted multiwfn software with the updated multiwfn application software?
Thanks in advance
Regards
Louis-Charl