Can't install on OSX 10.4.11

Forum 2005-2010 (read only) Hardware Troubleshooting
1

Same issue as Vince in the "Can't install driver in 10.4.5" thread.

Arduino 15 spits out this error:

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

and the serial port selection is grayed out, implying that Arduino can't find a serial port.

I can see the serial port in Zterm (USBSerial A7006vOU), and my BS2 works fine (with the same FTDI drivers) so I'm not sure what's going on.

Arduino 11 alpha and 12 do the same thing.

Arduino Decimillia with both ATMEGA168 and 328 processors (stock and LadyAda bootloaders respectively)

iBook G4, OSX 10.4.11, 1.25GB RAM, 80GB HD, no love for my Arduino.

Help?

2

Mods, please move to software troubleshooting forum. Thanks.

3

You might have an incompatible version of the RXTX library installed somewhere. See the notes under "all platforms" on this page on the Processing web site: Serial / Libraries / Processing.org

4

The link says to look for libSerial.jnilib on OSX, which I am lacking. I do however have a librxtxSerial.jnlib in my Java extensions folder. I also have a regular comm.jar from 9/04 and rxtxcomm.jar from 7/06 in the same folder.

I blew all 3 away, and lo and behold, it worked! I think they may have been left over from an ooooold installation of JMRI.

For those who are looking for a solution in the future, the files are located in /Library/Java/Extensions/, and the directory looked like this before I deleted them and got it fixed:

Just delete all 3 and the problem goes away.

Oh, and make sure you're running release 8 of Java for Max OSX 10.4. It seems to speed things up and add stability all over.

5

Thanks Muasball! Finally I've got my Arduino working. I just deleted those Java exact files as you said, and the port is no longer grayed out. I was able to load the Blinking LED program and now the fun begins. For a while there I thought that I was never going to get it working, but I knew better and just hung on.

Last year I had trouble getting a NCE USB card to work with a Power Cab to run JMRI's Decoder Pro and the fix had something to do with Java RXTX libraries. Maybe that created the problem I was having with Arduino.

Anyway, I'm running at least Arduino for now. :slight_smile: