Thanks PG. Most informative.
WLE9 appears to load the BabyFace, then unloads it to try the Behringer BCA2000! Now this device has not been used on this netbook since 2010, when I tried to install its XP-only driver on W7 (no use!). No uninstall programme supplied. I have removed the drivers and sys, but the ASIO is still lurking somewhere. I suspect some dirty digging in the registry might be involved. 
Any way to get WLE9 to ignore this device? (Or get rid of it in the ASIO system?)
Trace file can’t be attached - will try to email.
Thanks again