error in fread (showProgress is not type integer but type 'logical'. Please report.)

[demydd]

I have used fread to read data. But the error has arisen:

showProgress is not type integer but type 'logical'. Please report.

Here is the reproducible script:

library(data.table)
x <- "sgsddsfsfsf"
write.csv2(x,"check.csv", row.names=FALSE)
fread("check.csv", stringsAsFactor=FALSE)

[MichaelChirico]

Try restarting R and running again. I can't reproduce your example (on v1.9.8):

library(data.table)
x <- "sgsddsfsfsf"
write.csv2(x,"check.csv", row.names=FALSE)
fread("check.csv", stringsAsFactor=FALSE)
#              x
# 1: sgsddsfsfsf

Can you give sessionInfo() if the problem still arises?

[demydd]

Detail see [here](http://stackoverflow.com/questions/40890999/error-in-fread-showprogress-is-not-type-integer-but-type-logical-please-repo.

The poblem still is still here.

[mattdowle]

Looks like I'm to blame - sorry. I changed the type of the showProgress global option to logical for fwrite : eb9f7ef

There was a strange problem in the past almost identical : #1111

With fresh eyes I don't see why showProgress wasn't type logical in the first place throughout. Will fix.

In the meantime, passing showProgress=1L or 0L to fread() should work. It's strange it only causes a problem on Windows.