I just uninstalled the windows serial driver followed by a reinstall of teensduino which install the serial driver.
Next I launched Arduino 1.6.1 and attempted to Compile and upload the HelloSerialMonitor program.
Attached is a snap shot of Arduino and below is the Verbose information.
One thing to note is the 2 buttons between Open Hex file and Auto are always grayed out.
21:26:49: Teensy Loader 1.21, begin program
21:26:49: File "sketch_mar24a.cpp.hex". 12160 bytes, 5% used
21:26:49: Listening for remote control on port 3149
21:26:49: initialized, showing main window
21:26:50: remote connection opened
21:26:50: remote cmd: "comment: Teensyduino 1.21 - WINDOWS"
21:26:50: remote cmd: "dir:C:\Users\Gord\AppData\Local\Temp\build8438191353250243149.tmp\"
21:26:50: remote cmd: "file:HelloSerialMonitor.cpp.hex"
21:26:50: File "HelloSerialMonitor.cpp.hex". 15276 bytes, 6% used
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "auto
n"
21:26:50: remote connection closed
21:26:50: remote connection opened
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: HID/win32: vid:06A3 pid:0765 ver:0109
21:26:50: HID/win32: vid:046D pid:C52B ver:2401
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:50: remote cmd: "status"
21:26:50: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:51: remote cmd: "status"
21:26:51: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:52: remote cmd: "status"
21:26:52: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:53: remote cmd: "status"
21:26:53: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:54: remote cmd: "status"
21:26:54: status data sent
21:26:55: remote cmd: "status"
21:26:55: status data sent
21:26:55: remote cmd: "status"
21:26:55: status data sent
21:26:55: remote cmd: "status"
21:26:55: status data sent
21:26:55: remote cmd: "status"
21:26:55: status data sent
21:26:55: remote cmd: "status"
21:26:55: status data sent
21:26:55: remote connection closed
21:28:37: Auto Button event
21:28:37: Auto mode: disabled
21:28:37: Auto Button event
21:28:37: Auto mode: enabled
21:28:46: Verbose Info event