Synology DSM 4.2 is incompatible with MinimServer

[Rairwave]

I've installed the 0.63.4 version but it gives this error message:

starting MinimServer
HTTPService: error creating server socket: Address already in use
MinimServer error: now stopped, use 'restart' or 'exit'

I had installed MinimServer 0.63.3 on DSM 4.1 and upgraded to DSM 4.2 with the new java manager.