I blew away my existing R directory structure, reinstalled R 2.2.1 from
scratch, downloaded lme4 and associated packages from scratch, tried to
load lme4 and got the same error message. Again, I am using the Windows
version of R on XP.
Chuck
R : Copyright 2005, The R Foundation for Statistical Computing
Version 2.2.1 (2005-12-20 r36812)
ISBN 3-900051-07-0
....
> library(lme4)
Loading required package: Matrix
Error in lazyLoadDBfetch(key, datafile, compressed, envhook) :
ReadItem: unknown type 241
In addition: Warning messages:
1: package 'lme4' was built under R version 2.3.0
2: package 'Matrix' was built under R version 2.3.0
Error: package 'Matrix' could not be loaded
>
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