Runtime Distribution Error

[JC007]

Runtime Solution.
Hi all

I haver created a FileMaker 16 pro advanced database and now need to distribute it.  I have successfully created the runtime solution and all is well on my iMac.  I have tried to send this to my friend (who doesn't have FileMaker) and when he tries to open the .app file, he gets an error message :-
"The Primary File cannot be found and is required for this application".
The structure of the files I have sent him look like this :-
Runtime Folder
.app
.fmpur
Extension Folder 
FMP acknowledgements

He can then goto the folder and click the .fmpur file and it opens sucessfully.  This has to be completed every time.

Any help would be greatly appreciated.

JC007

[doughemi]

What version of the operating system does he run? An FM 16 runtime wrapper (.app) may not operate correctly on a Mac running Yosemite (10.10) or lower.