Thank you guys for the information. Yes, originally I came to this forum to download a free plugin. I have found multiple WWW pages saying that RoundCorner is great and that it is free. I just wanted to quickly show how some furniture will look like in our new house to my wife.
Since I could not download the plugin apparently because of the local activity-credit system, I made the round corners by the Follow me tool as I always do, it just took 1-2 hours longer than it probably would take when using the plugin. Plus about an hour chatting on this forum:)
I use Sketchup only for testing architectural features of our house so I do not consider myself an expert to give advice to others. This means that I won't be able (not mentioning to have spare time) to contribute to this forum which in turn won't allow me to download. Seems like chicken-egg problem.
I'm describing my situation for local admins to consider the download limitation for newbies. For me it means that I'm leaving this forum (at least for a while) abandoned with the Follow me tool to do round corners. Who knows, since I have over 20 years of programming experience (I also know Ruby but not from Sketchup), I could provide it to this community based on my experience with the plugin downloaded. But this won't happen now because I have nothing to look at.
Thank you for your time!