Is anybody successfully exporting Trilian tracks in FLStudio 9.03 on WinXP 32?

I get tracks which play normally in the project, but which contain numerous dropouts when exported to wav. This happens whether the instrument (in this case the acoustic bass 1, either full or lite version) is loaded in Trilian or in Omnisphere!

Is this a known issue, or is it only happening to me? (looking for a paranoid smilie...)

Screen shot below: