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Topic: Mac OSX 10.8 and 10.7 Serial Port in Tools menu greyed out (Read 544 times) previous topic - next topic


I have a new Uno Rev 3 board that has the Serial Port selection greyed out but only when running on a Mac. On a Windows XP machine it works perfectly.
As soon as I click the Tools menu I get this error message "java.lang.ClassCastException: gnu.io.RXTXCommDriver cannot be cast to gnu.io.CommDriver thrown while loading gnu.io.RXTXCommDriver[/color]"

In Terminal I can see the port as "crw-rw-rw-  1 root  wheel   18,  28 Jan 11 14:45 /dev/tty.usbmodemfa1211". I'm running Arduino version 1.0.3
I have tried different USB ports and different USB cables all with same result.

I have no idea where to go from here, any help would be appreciate.


I have exactly the same issue on my Mac Pro Early 2008 10.8.2. However on my MacBook Air it works fine.....


James C4S

Check to see if there is a difference in java versions between the two macs.
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

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