* checking for file 'SNAData/DESCRIPTION' ... OK
* preparing 'SNAData':
* checking DESCRIPTION meta-information ... OK
* checking whether 'INDEX' is up-to-date ... NO
* use '--force' to overwrite the existing 'INDEX'
* installing the package to re-build vignettes
* Installing *source* package 'SNAData' ...
** R
** data
** inst
** help
 >>> Building/Updating help pages for package 'SNAData'
 Formats: text html latex example 
 CEOclubs text html latex example
 Countries text html latex example
 Florentine text html latex example
 Freeman text html latex example
 Krackhardt text html latex example
** building package indices ...
* DONE (SNAData)
* creating vignettes ... ERROR
Loading required package: grid
Error: processing vignette 'SNAData.Rnw' failed with diagnostics:
 chunk 6 (label=CEOs) 
Error in checkSlotAssignment(object, name, value) : 
 "edgemode" is not a slot in class "graphNEL"
In addition: There were 50 or more warnings (use warnings() to see the first 50)
Execution halted