I used gnuplot 4.6.0 under win7 and tried to switch to some newer version, eg. gp464-win32-rc1.zip or even gp470-20140118-win32-mingw.exe. I recognized the following bug that was not present under 4.6.0
set datafile separator ';' plot "file/example.csv" using 1:2
with the file example.csv
lead to the error message "out of memory for expanding curve points" or gnuplot even crashes. If the csv file does not end each line with a semicolon:
everything works as expected.