[R-sig-finance] getReturns problem

[Linus Thand]

I am trying to run getReturns on a timeSeries object (azn.ts), but the 
function fails:

 > is.timeSeries(azn.ts)
[1] TRUE
 > foo = getReturns(azn.ts)
Error in getReturns(azn.ts) : couldn't find function "positions"

I am running R 1.9.1 and the latest RMetrics libraries (downloaded 
August 5th).
Can anyone help me with this?


Kind regards,
Linus Thand