Landscape file *Library/Preferences/SAP/SAPGUILandscape.xml cannot be parsed.

Hi

I am trying to use ADT on the following system:

OS X Yosemite 10.10.3

Eclipse Luna 4.4.2 with the following installation details:

SAP GUI for Java 7.40 rev 2

(Version ID 074000040200)

The backend system is SAP NetWeaver 7.4

1) When I try to create an ABAP Project I get the following error:

Landscape file */Library/Preferences/SAP/SAPGUILandscape.xml cannot be parsed.

Please check its content or the configuration path in SAP GUI.

2) I also tried creating the connection manually but I get the following error in this instance:

         Logon to system SYSID failed (hostname 'MYCOMPUTERNAME' unknown)

Any idea why I would be experiencing these problems and how I can resolve them?

Thanks