Portable Application Template (all versions) BUG!?

i've been tested PortableApplicationTemplate of all versions (even the latest 2.5)

.EXE start correctly but REGISTRY not wokring when .exe have a space between, it works when i rename it (remove EXE name space)

An Example:

WINAVI MP4 CONVERTER.EXE (this don't work because the original EXE has a space between the words)

the program startup fine but the REGISTRY do nothing no matter how i set REGKEY file in datadir. BUT!!! everything works just like other apps when i change the exe filename to: WINAVIMP4CONVERTER.EXE

-------------------------------- My Template ---------------------------------
; ~~~~~~~~~~~~ The Portable App Basic Info ~~~~~~~~~~~~
!define AUTHOR "AUTHOR NAME"
!define APP "WinAVI MP4 IPOD CONVERTER"
!define VER "x.x.x.x"
!define EXE "WINAVI MP4 CONVERTER.EXE " <--- THIS IS THE PROBLEM when Space.
-------------------------------------------------------------------------------

I've changed:
!define EXE "WINAVIMP4CONVERTER.EXE" (no space between words)
It Works! I can live with that thog. Just curious and learn. PLEASE ADVISE