MDM Port Status (with file) is showing Empty

Hi,

We are having issues with Auto Import.

This was working correctly some days back and has suddenly stopped.

We restarted MDIS and MDS but it didnot resolve the issue.

What i found was although the Ready folder of the Port has files ,Port status in Console is showing Empty (was excepting -Has Data).

Looks like MDIS is not talking to MDS.

Also MDIS log shows Trace warning "Server instance not supported "

Never came through this issue before.

Any inputs wiould be highly appreciated and awarded.

regards

Vikrant