UPLOAD PROBLEM

First time used Arduino, try to upload, but got following message:"
avrdude: ser_send(): write error: sorry no info avail
processing.app.debug.RunnerException
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:125)
at processing.app.Sketch.upload(Sketch.java:1719)
at processing.app.Sketch.exportApplet(Sketch.java:1625)
at processing.app.Sketch.exportApplet(Sketch.java:1597)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2397)
at java.lang.Thread.run(Unknown Source)
Caused by: processing.app.debug.RunnerException: Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
at cc.arduino.packages.Uploader.executeUploadCommand(Uploader.java:111)
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:123)
... 5 more"
Please help. Thanks.

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