Need an opinion please

Question

I am learning asc3 and loving it. I just ran into a problem
as i tried to do a tutorial recently of where cards flip over and
load random card design on them.
i constantly get this error. if someone can please verify my
work and opinion and tell me where i made the mistake. I dont
believe its in the code but the placement of the graphics but i
need confirmation on it and also on where the error is:
TypeError: Error #1009: Cannot access a property or method of
a null object reference.
at Card/settype()
at Memory/CardLoader()
at Memory()
PLEASE GO HERE TO GET ATTACHMENT OF MY FILES THAT I DID:
http://www.actionscript.org/forums/showthread.php3?t=190078
Thank you

Answer 1

The error message answers that for you... it tells you when
your code isn't working. Hopefully you'll remember that particular
error message from here on out because it is common and always
means the same thing.
So if you go back to kGlad's original reply, the problem was
identified there--in more translatable form. He would definitely
have pinpointed the problem had you described how the Card was
configured--I consider him a true expert (not myself... I learn
thru the postings of others in these forums--lots of opportunities
that my own work doesn't present).
It is always helpful when people provide not only the code
they use, but also the details of the how the pieces involved are
assembled. Fair warning though... if you end up showing a mile of
code you're less likely to get any help. Many of us that try to
help prefer to have things narrowed down and to see that someone
has actually done something to try to resolve matters ahead of
posting. People that simply say "this isn't working" or "how do I
design this", which is common, are likely to get a replies in the
vain of "what have you tried" or "learn how." Try spending a few
days helping people out here and you'll probably come to understand
why.