PROBLEM
Error retrieving Flow data: Unable to retrieve data (ERROR: rwsetbuild: Invalid IP on line 1: IP address cannot begin with single ':')
CAUSE
Extra white space surrounding the IP address of the device.
RESOLUTION
Should you encounter this error when selecting the Flow Analysis console for a device that is configured as a flow source, remove any preceeding or trailing white space in the IP address field of the device (Device->Administration->Update) or flow source configuration (Superuser->Global Config->Netflow Configuration).
APPLIES TO
Traverse 9.1 and earlier versions.
REFERENCE
None.