[R-sig-Debian] mgcv won't load

[Tyler Smith]

Hi,

I'm getting the following error when I try and load mgcv:

> library(mgcv)
Error in dyn.load(file, DLLpath = DLLpath, ...) : 
  unable to load shared object '/usr/lib/R/library/Matrix/libs/Matrix.so':
  /usr/lib/R/library/Matrix/libs/Matrix.so: undefined symbol: R_check_class_and_super
Error: package/namespace load failed for 'mgcv'

I thought there might be a mismatch between packages from cran2deb,
install.packages() and the main R repos, so I purged my R installation
and rm-ed all the locally-installed packages and reinstalled, using only
the official R repos. Same errors. 

Anyone else seeing this? Any ideas how to fix it?

Thanks,

Tyler
Debian Testing
R version 2.12.2 (2011-02-25)
Linux 2.6.32-5-686