mxj.net.tcp.send works fine on PC but not on a MAC

Craig Clarke's icon

This is bugging me. I created a simple patch to select inputs on a projector via TCP commands works fine on my PC but not on a Macbook. Have checked all the firewall etc and even seem to get the acknowledgement when looking on wireshark the only difference I can see is the packet size

Projector control.maxpat
text/plain 2.55 KB

Source Audio's icon

send messages between mac and pc to see what is wrong.
max 832 on High Sierra send to max 6 on my old macbook
all works as it should, what gets sent gets also received

Craig Clarke's icon

Thanks. Sometimes you overlook the obvious when your down a hole. So I can send PC to MAC but not the other way round