I am using vb6 which is connected to a msaccess db

I have 2 msflexgrids on a form the 1st grid populates with data, when
a user double clicks on one of the rows the data from that grid moves
to the second flexgrid, this works fine however when i unload the form
and load it back up again and populate the first grid with data on a
double click instead of placing that data in the second grid I get a
Subscript out of range error.

Thank you in advance ,