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
Max Patch

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