Hello, i'm having the same problem (My OS is Windows Vista.. i don't konw if this can affect)

I`ve downloaded the distribution of Lightstreamer Moderato and i've followed the instructions of GETTING STARTED.TXT ,but when i try to launch the server, i always obtain the same message:
<FATAL> License not valid (4). System exists

I've gotten the license file several times, but doesn't work.

I have VMWare installed too... could be this the reason of the issue?