while opening simulink, there's an error .please suggest me a solution.

Can't load 'C:\Program Files\MATLAB\R2014a\bin\win64\sl_graphical_classes.dll': C:\Program Files\MATLAB\R2014a\bin\win64\sl_graphical_classes.dll is not a valid Win32 application.

[Walter Roberson]

Are you using 32 bit MATLAB or 64 bit MATLAB?

[DRISHYA DINESH]

i'm using 64bit matlab

Answer 1

[chandrapal Singh]

windows and Matlab version compatibility issue. I think you need to install the proper version of MATLAB according to your operating system configuration.

You should try disabling any security software that may be running on your machine, and attempt to launch MATLAB as an administrator.

If the issue persists you should run a dependency analysis looking for the dll which is causing trouble. For instance, this error could be generated by a QT version conflict when the QT version used by another software is different from the one used by MATLAB.

To set up dependency analysis and run it please see the link below:

 <http://www.mathworks.com/matlabcentral/answers/95906-how-do-i-profile-my-exe-or-dll-file-with-dependency-walker> 
here you can see also a script that should help you to configure the dependency walker from MATLAB:

http://www.mathworks.com/matlabcentral/answers/112452-how-can-i-use-a-matlab-script-to-create-a-profile-with-dependency-walker

[Walter Roberson]

You might be missing a library needed by C:\Program Files\MATLAB\R2014a\bin\win64\sl_graphical_classes.dll . If so then reinstalling Simulink might possibly fix the problem.