Minimserver 0.8.3 StartError on Synology

[bbrip]

Upon my attempt to completely reinstall Minimserver, DSM gives me a message that port 9790 is used by another service. How can i find out wich service this might be as bow I cant reinstall Minimserver at all....

Update: I stopped a few other services that I don't need, rebooted the NAS and now managed to reinstall Minimserver. But the issue remains. I get an error msg that MinimServer cant start. It shows as stopped in the package center but is actually scanning the library...