Sketch not Uploading (did my homework)

Development Tools IDE 1.x
1

Ever since I updated to 1.0, when I try to upload a new sketch to my arduino UNO, it tells me the port's in use. When I grep it in terminal, however, it says it's not in use by anything. Thoughts? Bug report posted for posterity. I've tried everything the suggested in the FAQ and then some. Does this have to do with the AVRDude thing that seems to be plaguing the windows users?

Binary sketch size: 1018 bytes (of a 32256 byte maximum)
processing.app.SerialException: Serial port '/dev/tty.usbmodemfa141' already in use. Try quiting any programs that may be using it.
at processing.app.Serial.(Serial.java:144)
at processing.app.Serial.(Serial.java:76)
at processing.app.debug.Uploader.flushSerialBuffer(Uploader.java:75)
at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:93)
at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:56)
at processing.app.Sketch.upload(Sketch.java:1603)
at processing.app.Sketch.exportApplet(Sketch.java:1568)
at processing.app.Sketch.exportApplet(Sketch.java:1524)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2293)
at java.lang.Thread.run(Thread.java:680)
processing.app.debug.RunnerException: Serial port '/dev/tty.usbmodemfa141' already in use. Try quiting any programs that may be using it.
at processing.app.debug.Uploader.flushSerialBuffer(Uploader.java:99)
at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:93)
at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:56)
at processing.app.Sketch.upload(Sketch.java:1603)
at processing.app.Sketch.exportApplet(Sketch.java:1568)
at processing.app.Sketch.exportApplet(Sketch.java:1524)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2293)
at java.lang.Thread.run(Thread.java:680)

2

Is this a Mac? Did you try:

lsof /dev/tty.usbmodemfa141
3

Indeed I did, thank you for the quick reply!

Tried it again, and got the same results (nothing). Messing about in terminal is foreign to me, so maybe you'll see something I don't.

new-host-5:~ Name$ lsof /dev/tty.usbmodemfa141
new-host-5:~ Name$

4

Maybe this will help, I don't know:

http://www.maczeppelin.com/?p=384

5

Worked perfectly!! I also rolled back to 0023, same problem, then did your fix, solved. if it ain't broke, ya know?

So, why did that work?

6

I think two processes set up a file in /var/lock to see (by the presence of the file) if they are attempting to grab the same resource. If the directory itself isn't there the "is this device in use" function fails.