gdfReadHeader: reading group_age_sex.fsgd
ERROR: gdfRead: group_age_sex.fsgd is not formatted properly.
The first string is 'GroupDescriptorFile', should be 'GroupDescriptorFile'
As you can read, I did not misspelled the GroupDescriptorFile and even added a 1 after! (as GroupDescriptorFile 1), as mentioned in the wiki.
It does not seem to be any “useless" tab in the fsgd file. I have attached an exemple (I just left 1 subject)
Thanks for your time.