You could try doing it through R:
For Stata <= 15 you can use the haven package to read the dataset and then you simply write it to external CSV file:
library(haven)
yourData = read_dta("path/to/file")
write.csv(yourData, file = "yourStataFile.csv")
Alternatively, visit the link pointed by huntaub in a comment below.
For Stata <= 12 datasets foreign package can also be used
library(foreign)
yourData <- read.dta("yourStataFile.dta")