When I run simulation, an error similar to the following occurs:
"??? error using ==> java_method
No class com.xilinx.sysgen.corefunc.xlmult_j can be located on Java class path."
If you have just installed a System Generator Update, please close down and reopen Matlab in order to update the Java class path. After restarting Matlab, the simulation should run as expected.
If you are still experiencing similar problems with Java method messages, please refer to (Xilinx Answer 10927).