Hmm, I think you should be using the skalogryz one but Dmitry does not seem to have been active for a few years. Indeed, he does seem to have been here for a couple of years.
Just to clarify, you down load the zip file, unzip it, then from within lazarus you go to Packages, Open Package, find the package file where you unzipped it and allow Lazarus to compile it and rebuild itself ? And then restart automatically ?
Specifically, at which point does it fail ? I am guessing during the restart ?
I don't use windows myself but could try and bring it up here, likely I'll see the same problem.
As an aside, hove you considered KMemo ? Its a bit more cross platform and still, to some degree, managed. I use it in my app, different from RichMemo but you get use to it.
https://wiki.freepascal.org/KControls/KMemo_notesDavo