Hi all,

I have a problem in installing and using the plm 
package using R 2.2.0 on windows xp.

I installed it from a .zip file downloaded from 
the CRAN. Apparently everything is ok:
 > utils:::menuInstallLocal()
package 'plm' successfully unpacked and MD5 sums checked
updating HTML package descriptions

However, when I try to load it:
 > library(plm)
Errore in lazyLoadDBfetch(key, datafile, compressed, envhook) :
         ReadItem: tipo 241 sconosciuto
Inoltre: Warning message:
il pacchetto 'plm' รจ stato creato con R versione 2.4.0
Errore: caricamento pacchetto/namespace fallito per 'plm'

Sorry I installed R in Italian, but that should 
be easy to understand. "Errore" means, of course, 
error and "sconosciuto" means unknown. Basically 
the package cannot be loaded because there is an 
unknowwn item (at least, that's what I understand).

Does anybody have an idea of the problem?

Thank you,

Giangiacomo

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