GPS Data Logger Software - BT747

It seems that under Snow Leopard Terminal runs in 64-bit and looks like Java too which makes some images(?) non-working since there is no 64-bit code... Or, I don't know. Anyway, I've installed drivers but M-241 still doesn't work. There is a message in the Terminals' window when I'm searching for the ports

java.lang.UnsatisfiedLinkError: /Users/ajax/Downloads/BT747/lib/rxtx-2.1-7-bins-r2/Mac_OS_X/librxtxSerial.jnilib: no suitable image found. Did find: /Users/ajax/Downloads/BT747/lib/rxtx-2.1-7-bins-r2/Mac_OS_X/librxtxSerial.jnilib: no matching architecture in universal wrapper thrown while loading gnu.io.RXTXCommDriver
Exception in thread "Thread-3" java.lang.UnsatisfiedLinkError: /Users/ajax/Downloads/BT747/lib/rxtx-2.1-7-bins-r2/Mac_OS_X/librxtxSerial.jnilib: no suitable image found. Did find: /Users/ajax/Downloads/BT747/lib/rxtx-2.1-7-bins-r2/Mac_OS_X/librxtxSerial.jnilib: no matching architecture in universal wrapper
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1878)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1795)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1045)
at gnu.io.CommPortIdentifier.(CommPortIdentifier.java:83)
at bt747.j2se_view.BT747Main.access$3200(Unknown Source)
at bt747.j2se_view.BT747Main$36.run(Unknown Source)