I have a 27 inch iMac with maverick os. my current version of iMovie (10.0.6) will not open older projects i created in iMovie 9.0.9. I can find the projects and they have a ".rcproject" file extension

Question

I have a 27 inch iMac with maverick os.  my current version of iMovie (10.0.6) will not open older projects i created in iMovie 9.0.9.  I can find the projects and they have a ".rcproject" file extension

Answer 1

Thank you GeeD. I'm still stymied.
I have moved the Event and Project Folders to the "top-layer of the drive" as the instructions state, right alongside the System Folder, Users Folder and Applications Folders.
When I open iMovie 10.0.8, the Events and Projects Folders are empty:
When I select File/Update Projects and Events, I get an alert box that says iMovie couldn't find any:
Not knowing exactly what is meant by the "top layer" in the instructions, I moved the Events and Project folders back inside the "Movies" folder where I found them (but then not where I would call the "top" layer, but rather "iMac/Users/Home/Movies/iMovieProjects". Then I tried to "Update Projects and Events" and received the same alert: "iMovie could not find any projects or events to update."
Then I tried to update iMovie 9.0 (iMovie '11 version 9.0 (1073)) to version 9.0.9 .
[As an aside, the nomenclature of iMovie drives me nuts. The latest version is 10.0.8, which us newer than iMovie '11.]
Back to the update of version 9.0 to 9.0.9.
Presumably because I have version 10.0.8 installed, I got this alert box:
So, I cannot update version 9.0
and I cannot "Update" the Events and Projects created in version 9.0.