German Umlaut ä in Name of Standalone stops Starting

Tue May 31 11:12:52 EDT 2016

Hello list,

I tried my first steps to Livecode8.0 on OS X 10.11.5, 
took a stack, which run in 6.7.8,
made a standalone in 8.0.1
and it worked. Fine!!

Hereafter I changed the name of the standalone from 

pk-adressbuch_2_00_Gaeste.app to pk-adressbuch_2_00_Gäste.app,

(„Gäste“ is „Gaste“ with a-Umlaut, (a with a dieresis above)).

After that, when I startet the app, it showed the splash screen and stopped; I had to stop it by the finder.

Is it my fault or a bug of livecode 8.0.1?

Richard.