I was playing with Networking /sharing files
I thought I had worked it out (thanks Pastor Don).
I closed Ecco Ext selecting the exit from the right mouse click
I restarted Eccoext to see the automagical addition of appointments etc.
When instead of seeing that I am now looped in a dialogue box with the message
Unhandled Registry error CFO.
I then have to go to Task Manager to kill the process.
I can open the file with Ecco alone I have just tried OPening ecco ext with no default file open from Ecco (Open ecco close the file I was working on close ecco open eccoext.) I get the same error message...
 
I do like eccoext - having gotten rid of my 2 saturday problem.
This appears to be an ecco ext rather than a ECCO pROBLEM.