Not Working IDE

Hello,

Im pretty new with Arduino and i cant get it working.

My problem is that the IDE interface cant show the serial ports in my Mac OS X Leopard (G4).

When I click on the 'Tools' menu i get this weird message from the black terminal at the bottom of the IDE:

java.lang.ClassCastException: gnu.io.RXTXCommDriver thrown while loading gnu.io.RXTXCommDriver

My USB Driver its perfectly installed because i can see how a new /dev/tty.* its created and destroyed while plugin and unplugin the Arduino main board, so its a IDE/Java problem for sure.

Thank you very much for any kind of help

Try this: http://www.arduino.cc/en/Guide/Troubleshooting#toc8

Thanks for answering, but its nothing about that. Its really really weird that i cant even see the submenu listing all the serial ports avaiable in the computer :\

Hello Again,

Thanks for the help, i have solved it:

Native lib Version = RXTX-2.0-7
Java lib Version = RXTX-2.0-7

This was my version of the RXTX lib, so i though to update it to RXTX-2.1-7 and now it works perfectly.

Thanks again