FTS Search from Instinct does not work, but works in iNews. It seems that the request never gets to system.fts on the inews server.
iNEWS and Instinct both register iNewsCOMU.dll. If iNEWS is installed after Instinct, Instinct's DLL must be re-registered.
On an Instinct workstation, close Instinct.
Start > Run > regsvr32 "C:\Program Files\Avid\Instinct\iNewsCOMU.dll" <-- make sure this path is correct for your install.
Open Instinct.
Searching will now work