Hi Adrian,

>What's the best technique for getting exclusive USE on tables in a multi-user environment? I can't seem to trap Error no. 3 ("File in use" after a USE EXCLU call) in a form. Is it untrappable?

It should be trappable, any way, try this:

lcError = on('error')
on error *

use (MyTable) excl in 0

if used(juststem(MyTable))
   *Successful
else
   *Fail
endif

on error &lnError

You might want to create a generic resuable function or method out of this.