PerformanceAnalytics - Error in UseMethod("time<-")

Hi,

I have tried to create the PerformanceSummary chart in PerformanceAnalytics but always got an error. Even the example doesn't work showing the same error. I only get german error messages, but in english it should look like:
'Error in UseMethod("time<-") : no applicable method for "time<-"'

data(edhec)
charts.PerformanceSummary(edhec[,c("Funds.of.Funds","Long.Short.Equity")])

Fehler in UseMethod("time<-") : keine anwendbare Methode f?r "time<-"
 
Has anyone an idea?

Thanks,
Heiko

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