matlab coder error

I am converting a function from.m to .mex using matlab coder but i got following error with the screen still showing generating. mex for past few 10 minutes

com.mathworks.jmi.MatlabException: at com.mathworks.jmi.NativeMatlab.SendMatlabMessage(Native Method) at com.mathworks.jmi.NativeMatlab.sendMatlabMessage(NativeMatlab.java:210) at com.mathworks.jmi.MatlabLooper.sendMatlabMessage(MatlabLooper.java:121) at com.mathworks.jmi.Matlab.mtFevalConsoleOutput(Matlab.java:1618) at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:195) at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:172) at com.mathworks.toolbox.eml.plugin.CodeGenWrapper$1.runOnMatlabThread(CodeGenWrapper.java:46) at com.mathworks.toolbox.eml.plugin.CodeGenWrapper$1.runOnMatlabThread(CodeGenWrapper.java:37) at com.mathworks.jmi.MatlabWorker$2.run(MatlabWorker.java:79) at com.mathworks.jmi.NativeMatlab.dispatchMTRequests(NativeMatlab.java:339) >> why? help me out?

[Kaustubha Govind]

Please consider reporting this to Tech Support if you do not receive a reply here.

[ECE09 ITBHU]

how to report tech support?

[Fangjun Jiang]

type support in Command window. Or go to website http://www.mathworks.com/support