Sample code run problem for Arduino Mega 2560

I just installed Arduino package using Mathwork "targetinstaller". And try to run its sample code in "help->"supplemental software"->Example->"Target for use with Arduino Mega 2560 hardware"

I got this error when I enable external mode and use tools->"run on target hardware"->"run"

The build failed with the following message: "C:\MATLAB\Targets\R2012b\arduino-1.0\hardware\tools\avr\utils\bin\make": Interrupt/Exception caught (code = 0xc00000fd, addr = 0x4217b3)

Another problem, my arduino board is connected to USB COM3. But when I run this in Matlab command window, I got this error. I changed the current folder to "C:\MATLAB\Targets\R2012b\arduinomega2560", it does not work.

Any help will be appreciated.

 a=arduino('COM3')
Undefined function 'arduino' for input arguments of type 'char'.

[Kaustubha Govind]

For the second error, you need to run the install_arduino.m file that is in the downloaded package. This makes sure that the folder containing arduino.m is added to the MATLAB path.

[C Shen]

Thanks, I forgot to install the package.