Installation problem: cannot run maxima (MacBook)

Hello,

I can install maxima, gnuplot and wxMaxima with no error messages. However,
I have trouble running maxima in the Terminal. Below are the messages I
have:

Maxima 5.26.0 http://maxima.sourceforge.net
using Lisp CMU Common Lisp 20a (20A Unicode)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.


then I tried to test it with 1+1

(%i1) 1+1


It stopped there with no response at al. It happens both on my Mac (intel
duo core) and Linux (Fedora) machines. I have also tried a few different
combinations of various versions of CMUCL and Maxima. It did not solve the
problem. The only version of CMUCL I had not tried was *19d. *I believe it
is the one that should work but I could not find the source file for
x86-darwin machine. The funnies part was that I used to have maxima and
wxMaxima working perfectly fine on my Mac but after I upgraded the system
from Tiger to Snow Leopard, I could never run maxima anymore...

I have also tried to install it by .dmg file. However, I cannot run maxima
(by clicking .maxima in the Application folder) as well. I understand that
it is because my Mac has a 32-bit CPU while the .dmg version only works for
64-bit CPU. Is my understanding correct? Or are there any solutions to this
problem in particular?

My computer knowledge is very limited and I am exhausted after installing
almost every versions of CMUCL and Maxima... Any help is much appreciated.
Thank you so much.

Best,

Tong Zhu