Hi, I work with the X4M03 Module and Matlab. On the base of the matlab example "XEP_X4_plot_frame.m", I built a GUIDE GUI and everything works fine. The next step is to build a Standalone Application using Matlab Compiler. The GUI as itself works, but the ModuleConnector.Library makes problems. I localized the error in this section because of a path problem: Code: if ~isdeployed addpath('../ModuleConnector-win32_win64-1.4.2/matlab/'); addpath('../ModuleConnector-win32_win64-1.4.2/include/'); addpath('../ModuleConnector-win32_win64-1.4.2/lib64/'); end % Load the library Lib = ModuleConnector.LibraryCompiled; Lib.libfunctions As you can see I changed the Library to LibraryCompiled as described in the header. 1. Question: Is there an error in this section? Or do I have to adapt something in the code? Furthermore, I have no idea how to use the Application Compiler for XEP Applications: 2. Question: Which files i have to add where in the Application Compiler? Is it neccesary to add files in the section "Files installed for your end user"? I tried dozens of combination but nothing works. If you have an example, it would be really nice. Thank you. Regards, Sven.