No room to add more variables stata 15

Hello Guys,

I tried to open dataset LSAY 2009 with STATA 15 (64bite), but STATA told me 'no room to add more variables, see help memory r(900)'. Then I tried command 'set maxvar 32767' then reopen the dataset again. But it leads to the result 'dta file corrupt, the file unexpectedly ended before it should have r(612)'. Then I tried command 'set maxvar  120000' and reopen the dataset, but I got the same answer. 

Please help me with this problem, how do I open the dataset properly? 

Thanks for the help!!!