[R] Error of 'memory not mapped' in ff Package with VirtualBox

[Wonsang You]

Dear R Helpers,

I would like to report on an error in the ff package here.
The ff package is an R package which enables us to store large data on disk
systematically and have fast access to the database.
I used the package in Linux as a guest OS of VirtualBox, and executed the
following commands.

library(ff)
x<-ff(1:5,length=5,update=TRUE,vmode="double",filename="header.ff",overwrite=TRUE)

Afterwards, I got the following error message.

*** caught segfault ***
address 0xffffffff, cause 'memory not mapped'

Traceback:
 1: .Call("get_vector", .ffmode[vmode], attr(x, "physical"), index,    
nreturn, PACKAGE = "ff")
 2: `[.ff`(ret, 1)
 3: ret[1]
 4: as.vector(ret[1])
 5: identical(as.vector(initdata[1]), as.vector(ret[1]))
 6: ff(1:5, length = 5, update = TRUE, vmode = "double", filename =
"header.ff",     overwrite = TRUE)

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Selection:

Can anyone give an advice to solve the problem?

Best Regards,
Ryan

-----
Wonsang You
Leibniz Institute for Neurobiology
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