Why do I see this error message

Hi guys,

When I tried to solve a system of linear equation consisting of vector variables, this messgae poped out. Can anyone help me to troubleshoot this issue?

Error using sym/solve (line 89)

Error using maplemex

Error, (in MTM:-solve) Vector[row](2, [0,0], datatype = integer[1]) is not valid equation or expression"

[Walter Roberson]

Were you aware that you are using Maplesoft's maple as your symbolic engine, not Mathworks' Symbolic Toolbox that uses MuPAD as the symbolic engine?

The input accepted by maple differs in some important ways from the input accepted by MuPAD