No importable files warning

When importing selected clips from the events or projects folder of the external HD a warning appears stating "no importable files, change selection try again" attached is a pic of my screen with warning. What' s going on? Any advice would be much appreciated. I first imported the clips to my macbook from external HD then from the movies events folder tried to import to FCPX.

What are you trying to import? You can't import and event or a project. They are read by the application and opened by the application. What is going on?

I'm trying to import in FCPX from my HD a project that I had already worked on and was bringing back into FCPX to continue to work on it. I was able to do this with two other projects with no problem. I also had this same warning when I tried to import a shared project from another editor even though we both already had the same event files. It seems to be happening in several different situations. Thank you for your quick response!

Just to be clear here's the chain of events of the shared project.
My co editor and I both copied to our MacBooks from the external HD the event files for the shared project.
He then created and edited the project and shared it with me by copying the project to the HD FC project folder.
I then copied the project from the HD to my macbook FC project folder and then opened it in FCPX and that's where the warning shows.

You just need to take the main event folder (I think it's titled "br one" or something like that, I can't read it) and then drag it to your final cut event folder, then drag the project to your final cut project folder. It's the same as hiding projects and events like with event manager x, or just moving them manually as explained in the manual here.

Ok, I just read the manual, it's says to hide the project in hidden folder while restarting FCPX and moving the project back to the FC project folder. Do I understand this correctly? Thank you for your response.