Tim,
The codeblocks source referenced in the previous thread was from before Dec 2021 (I think) as this is when wx 2.8 support was removed as the block has support for 2.8.
Beesdeckar,
No one is going to be able to help you with the issue in 20.03 as there has been almost 5 years of changes in the source code since then and as such you are better building it from the latest SVN or GIT repo mirror as only then I expect you will get help.