On Feb 10, 2010, at 3:44 PM, Ben Bolker wrote: > Dear R-sig-Mac'ers: > > I'm posting on behalf of a student who is having trouble with > accessing the help files in R.app (I think) on MacOS X.4 (I think > X.4.11?) . The basic symptom is that in a clean R session she gets > results like this: > >> ?plot > Error in file(out, "wt") : cannot open the connection > > This is generic (i.e. happens with any help request). After a bit > more poking around we triggered > > 2010-02-09 15:20:21.010 R[16728] *** Exception handlers were not > properly removed. Some code has jumped or returned out of an > NS_DURING...NS_HANDLER region without using the NS_VOIDRETURN or > NS_VALUERETURN macros. > R(16728,0xa000ed88) malloc: *** error for object 0x3b610038: > Non-aligned pointer being freed > R(16728,0xa000ed88) malloc: *** set a breakpoint in szone_error to > debug > R(16728,0xa000ed88) malloc: *** Deallocation of a pointer not > malloced: 0x41d60; This could be a double free(), or free() called > with the middle of an allocated block; Try setting environment > variable MallocHelp to see tools to help debug > > We have both tried searching/googling for this particular problem, > without success -- found a fair amount about issues with help.start() > when running firewalls, but nothing that seemed to match our situation. > > * Does this ring any bells for anyone? Have we missed something > obvious (I hope)? What are the next steps in the > diagnostic/troubleshooting pathway? > > * Is there a searchable version of the R-sig-mac archives? > Rsitesearch doesn't seem to offer it, and the R-sig-mac archives seem to > be available only month-by-month (& not searchable), as far as I can tell. > > thanks, > Ben Bolker >
Ben I'll defer to Simon on the debugging part, as he has already engaged, other than to say, if this is a permissions issue, you can run the OSX Disk Utility: Applications -> Utilities -> Disk Utility and run the Repair Disk Permissions process (on the First Aid tab) on the disk to see if that helps. With respect to generally searching the list archives, I use: http://www.rseek.org which includes the R-SIG-* lists in addition to r-help and r-devel. HTH, Marc Schwartz _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-mac
