I'm getting the follow error for a file with 9704906752 bytes (errors out after a long while trying to load the data). I am using RRO 3.2.2 (64 bit) with the latest haven and ReadStat from this issue.
> d1 = read_sas('combined_all.sas7bdat')
Error: Failed to parse combined_all.sas7bdat: A row in the file was not the expected length.