SFR51F

Error 1234
Subscript is outside defined range
lnRow = ascan( taArray, tuValue, lnStartElement, -1, lnColumn, lnFlags)
line 51
Method: sfutility..arrayscan

I got this error after removing 3 grouping that I previously defined for a report

With the debugger I see that lnRow = .f.

and under the test for the value on lnRow there are some comment lines

*** WORKAROUND FOR BUG IN VFP: with return row flag set, return value is 1 too
*** high if the search column is the last one.

So could it be that what used to be a bug in VFP has been corrected and now because of that bug correction it causes a bug in SFR?

How do I fix this?