R-alpha: RData in batch

Finally, I found out that running the same instructions as root work fine.
The explanation for my computer sudden good will is not that I was root,
but that I ran R in a different directory ... without .RData!!
(and I don't care about .RData when I use R in batch mode!!).

This is a known and probably fixed bug.  The list of currently loaded
dynamic libraries is stored in .Dyn.libs, which is (incorrectly) saved in
.Rdata.  It should just be discarded.  A temporary fix is to add 
	.Dyn.libs<-NULL
to your start-up file.

A second potential problem: when I build packages including personal
functions, I use to test my functions interactively by typing
library(mypackage) after modification of my code in an editor.
The problem is that repeating the library load does not erase the old
version. Do I do something wrong?

No. library() is only supposed to load a package if it hasn't already been
loaded.  This is a feature.  You can unload the package with detach() and
then reload with library().  I don't know if compiled code can be unloaded
and reloaded in the current version, though I think it is at least
planned.

	-thomas

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