by mad-matt » Sun Dec 07, 2025 11:51 pm
I found your issue. Port 4000 is used by MadMapper for Sony Camera discovery. To use the port in another application on the same machine, you have to disable Sony discovery.
On macOS, copy that in Terminal.app:
for MM5: defaults write com.garagecube.MadMapper enableSonyRemoteSDK 0
for MM6: defaults write com.MadMapper.MadMapper enableSonyRemoteSDK 0
On Windows, from Cmd.exe:
for MM5: REG ADD HKCU\SOFTWARE\Garagecube\MadMapper /f /v enableSonyRemoteSDK /t REG_SZ /d 0
for MM6: REG ADD HKCU\SOFTWARE\MadMapper\MadMapper /f /v enableSonyRemoteSDK /t REG_SZ /d 0
Then restart MadMapper. That will solve the port 4000 issue.