Inconsistency when trying to create a transport layer

Hello , I'm new to Abap / SAP and recently installed " SCN - SAP NetWeaver Application Server ABAP 7:03 64 - bit Trial" for purposes of study . The system was installed on a virtual machine with the following settings :
Ram Memory : 3GB
HD : 100GB
Virtual Memory : 20480
Windows 7 PRO 64
I'm following the steps ABAP Trial Version for Newbies Manfred Lutz 's blog at the following link:
http://scn.sap.com/people/manfred.lutz/blog/2007/03/16/new-blog-series-abap-trial-version-for-newbies.
I'm stuck in step 7 where I need to create a transport layer and a virtual machine to create though both my system returns the layer is inconsistent. To create the layer I followed the following steps :
Client : 000
User : sap *
Transaction STMS
The system asks me to create a new TMS with the fields already filled in previously , just click on save . However when creating this way the system says that the TMS is inconsistent.
I wish someone could help me on this problem .