I deleted the seeduino libraries from the directory and also just tried a simple example file for blinky. I get the same port busy error and a missing library error
Forcing reset using 1200bps open/close on port COM5
processing.app.debug.RunnerException
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:152)
at cc.arduino.UploaderUtils.upload(UploaderUtils.java:77)
at processing.app.SketchController.upload(SketchController.java:732)
at processing.app.SketchController.exportApplet(SketchController.java:703)
at processing.app.Editor$UploadHandler.run(Editor.java:2061)
at java.lang.Thread.run(Thread.java:748)
Caused by: processing.app.SerialException: Error touching serial port ‘COM5’.
at processing.app.Serial.touchForCDCReset(Serial.java:107)
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:136)
… 5 more
Caused by: jssc.SerialPortException: Port name - COM5; Method name - openPort(); Exception type - Port busy.
at jssc.SerialPort.openPort(SerialPort.java:164)
at processing.app.Serial.touchForCDCReset(Serial.java:101)
… 6 more
Invalid library found in C:\Users\erikj\Documents\Arduino\libraries\Seeed_Arduino_LSM6DS3-master: no headers files (.h) found in C:\Users\erikj\Documents\Arduino\libraries\Seeed_Arduino_LSM6DS3-master