Please let me clear a few things up here…
@Henk contacted me a while I was on holiday (cut short due to Corona Virus) with the attached screenshot:
(Slightly edited by me, to hide personal identifiable information)
This error message happens before he adds any addons to the page. As has been discussed previously, the error indicates that the internal server RapidWeaver 8 uses for displaying previews has stopped working or is conflicting with something else installed on the computer.
Couldn't start the internal web server on 127.0.0.1:2222
Address already in use
My advice at the time was to reinstall RapidWeaver 8, and if that still did not help, to contact Realmac support for help.
The fact that this error happens prior to any addons being added to the page indicates that the problem is not caused by any installed addons. More likely the internal web server RapidWeaver 8 uses for previewing has gone “caput” for this particular user. The error message makes no mention of any particular addons and is very clear in its meaning.
All the free and paid addons I make for RapidWeaver install using the methods Realmac themselves recommend. So that means no custom installers or disk images etc. You are free to install, manage or delete addons in the normal way, in the RapidWeaver Addon Manager window. I already document this on my website. If you have further questions about this, you can email or live chat me.
There is no such addon available for RapidWeaver called RMWL. That has no meaning and nothing is returned by that name in a web search.
I make a popular addon called RWML. RWML stands for RapidWeaver Multi Lingual. It has been around for several years. It is very easy to find online and in the RapidWeaver Community Addons website. Last week it was trending on the front page of the RapidWeaver Community Addons website. Some developers like @MultiThemes also use RWML in projects they sell. This is one of the stacks to consider using if you need help building any multilingual website with RapidWeaver.
@robbeattie where have you got word from that RWML is obsolete and unsupported or no longer developed? RWML is currently the third most popular addon I sell. RWML is a simple $20 purchase from my website. No “special financial arrangements” needed, that I can see.