I copied a script from an older computer with Matlab 2012b to a new computer with Matlab 2017a and when I opened it, a Greek character 'μ' was encoded as a little square (maybe missing font). After Installing the Greek language option in MS Windows and typing in its place the letter μ, running the script reported an error (wrong matrix dimensions). So I reloaded the saved script and the character μ had now been replaced by a questionmark. Does anyone know what is going on? I have not witnessed this before. The faulty character encoding may have nothing to do with Matlab itself.