odd issue starting the KF5 version

[Jack]

Because I want to be able to run my distro's production version, 4.8  
git, and KF5 git versions, I have scripts to run the latter 2, which  
reset several KDE environment variables and run the appropriate  
kbuildsycoca.  So far I haven't discovered any problems caused by this.

However, when I run the new version with "full-path-to-executable  
full-path-to-kmy-file" it does run, but does not open any file.  I can  
manually open the file, but I don't see any relevant message on the  
console to indicate any problem.  If I run it without any file on the  
command line, it (correctly) opens the last file it had open.  Passing  
-n also works, it doesn't open any file.

Any suggestions?

Also - it can't find the tips-of-the-day file.  I'm assuming it's just  
another misdirected KDE environment variable, but so far, no idea which  
one.  Again, any suggestions on where to look are welcome.

Thanks.

Jack