Issue with AP Receipt Line

Did anybody ever find a solution for this one? (same version - 9.05.607) Or something similar? Thanks.

When I create an invoice and then create a "New Receipt Line" select the line and then click "Create Lines" it closes the window and does not add the line.

I get "[11/12/02@12:56:26.332-0600] P-006268 T-007396 1 AS -- (Procedure: 'ap/CreateAPLinesFromRcptDtl.p' Line:11697) Field 6 of table APInvHed not in buffer. (4176)" in the log.

Any ideas why this is happening?