vaex: csv file without header not supported

Hi, I am trying to load a CSV with no header using

df = vaex.open('data/star0000-1.csv',sep=",", header=None, error_bad_lines=False)

but I get

could not convert column 0, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 0, error: TypeError('getattr(): attribute name must be string')
could not convert column 1, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 1, error: TypeError('getattr(): attribute name must be string')
could not convert column 2, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 2, error: TypeError('getattr(): attribute name must be string')
could not convert column 3, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 3, error: TypeError('getattr(): attribute name must be string')
could not convert column 4, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 4, error: TypeError('getattr(): attribute name must be string')
could not convert column 5, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 5, error: TypeError('getattr(): attribute name must be string')
could not convert column 6, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 6, error: TypeError('getattr(): attribute name must be string')
could not convert column 7, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 7, error: TypeError('getattr(): attribute name must be string')
could not convert column 8, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 8, error: TypeError('getattr(): attribute name must be string')
could not convert column 9, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 9, error: TypeError('getattr(): attribute name must be string')
could not convert column 10, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 10, error: TypeError('getattr(): attribute name must be string')
could not convert column 11, error: TypeError('getattr(): attribute name must be string'), will try to convert it to string
Giving up column 11, error: TypeError('getattr(): attribute name must be string')

Also it takes like 20x the time to do nothing, any help?