I got the same errors a couple of weeks ago, but skipped/ignored them and the Eclipse Developer started OK. I just reread the Adabas & Natural for Docker installation guide and it said that the NaturalONE zip file had to be unzipped into directory C:\ONE_9.1.4.CE. I had extracted into my C:DOWNLOADS\SAG directory, resulting in file pathnames a little too long. I deleted that directory and re-extracted into just C:\ which created C:\ONE_9.1.4.CE and subdirectories without any problems.
Guess it helps to read and follow the instructions very closely. Next I need to reread them and download and install the Docker versions of Adabas & Natural Dev server. So much fun in this brave new world !
What made you think that Natural for TSO will no longer be maintained after the year 2024?
It is written in their website.
Natural TSO Interface version 8.2.8 with EOM of 31/12/2023
Natural TSO Interface version 8.2.7 with EOM of 31/10/2022
This information is available on empower
Version 9.2.1 will most likely be released on Oct. 2022.
Could you please share the link where it specified differently ?