runtime error with mex file: Cannot open shared object file: No such file or directory

I have compiled a .cpp file that includes shared object libraries. I used set_env('LD_LIBRARY_PATH') to set my LD_LIBRARY_PATH to have the same directories as the ones used to compile and link. I verified that when I use getenv('LD_LIBRARY_PATH'), I see the path to the .so file and the permissions are read and execute for user/group/other. But I still get an error at runtime when trying to execute the mex function that it cannot open the .so file. Any ideas?

[Al Dente]

did you use forward slash (/) or backward slash(\) in your path?