ggobi_find_file('data', 'flea.csv') returns NULL

[demography]

Dear all,

library(rggobi)

ggobi(ggobi_find_file('data', 'flea.csv'))

the codes above can't be normally run. I have installed all the newest version of softwares including Rstudio, Rgui, and GGOBI(rggobi) in Windows 7(english version).

in Rgui, ggobi(ggobi_find_file('data', 'flea.csv')) creates a GGOBI window without contents and ggobi_find_file('data', 'flea.csv') returns NULL.

in Rstudio, ggobi(ggobi_find_file('data', 'flea.csv')) returns the message: ** (rsession.exe:1244): CRITICAL **: datad_init: assertion `d->nrows > 0' failed and opens a new GGOBI window without contents too. ggobi_find_file('data', 'flea.csv') returns NULL too.

Thanks for your help.

Best regards

Richard