nwdi import failed-No Configurations on Server or Server error

Hi SAP Gurus,

While importing Development Configuration into NWDS(Version: 7.01.05) I am getting error "No Configurations on Server or Server error".

I've given correct SLD URL in Windows-> Preferences-> Development Configuration Pool http://hostname:port/sld/cimom. The ping was successful. Upon clicking on import and providing login details the track list in SLD is not popping up instead I am getting the error.

I've tried with SLD URL http://hostname:port/(ping was successful) but the issue is still the same. We have restarted the SLD and DTR but no luck.

The tracklist is available in NWDI (logged into http://hostname:port/devinf and clicked on Show tracklist). I am able to see the tracks in CMS as well.

Please can someone help to resolve the issue