32-bit on 64-bit

*I have an app written in D7 that refuses to run on XP Pro x64 or Vista
x64. It dies with "The application has encountered a problem and must
close..." and it does this before anything shows. The app doesn't do
anything particularly fancy but it does use 125+ forms. I've done about
all I know to do make it UAC compliant, even adding a UAC manifest. In
the project dpr the first thing it does is to determine the path to the
installed app using ParamStr(0), followed by the path
to 'user\Application Data' folder using SHGetSpecialFolderLoction. With
this latter path it reads a bool value from an ini file to decide
whether to display a splash screen. It then displays or doesn't display
the splash screen depending on the return bool. The app doesn't even
get to the splash screen display.

I thought maybe there was something going on in an initialization
section in one of the units 'used' in the dpr but I can't see anything
that looks suspicious.

Can someone point me in the direction I should be looking?

Thanks

HarryS

--- posted by geoForum on http://delphi.newswhat.com