Hi,

I get the following error when trying to remove a union class:

> setClassUnion('a', c('matrix', 'numeric'))
> removeClass('a')
>  sessionInfo()
R version 2.15.3 (2013-03-01)
Platform: i686-pc-linux-gnu (32-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=C                 LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base


Is this normal? Am I doing something wrong?

Hadley, this is problematic for devtools, because load_all tries to cleanup
S4 classes when an error occurs when loading a development package and
crashes with no hint on the original error.

Thank you.

Bests,
Renaud

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