The following simple code produces error

SQL expression is to complex (VFP7 SP 1)

Help says: Visual FoxPro ran out of memory ....

I have 256 MB RAM. Why vfp is not capable to run this simple select ?

CREATE CURSOR alloweditems ( liik c(10))
CREATE CURSOR artliik ( liik c(1))
CREATE CURSOR toode ( f1 c(1))
SYS(3055,2040)
select * ;
   from toode ;
      left OUTER JOIN artliik ; 
        ON .f. ;
   where .t. OR ;
  (.f. AND artliik.liik in (select * from alloweditems ) )