[Wine] Error Number 6 Overflow

[K4Z00]

installed a (company specific) program few days ago
had been working fine
now giving:

Error Number 6 Overflow
Occured in Sub 'get_results_from_database'
in Module 'frmResults' in project DAO.Field

no other modifications made to wine in the last few days
any ideas why this error should arise now?
any idea how to solve it?

there is  a Dao360.dll in /home/user/.wine/drive_c/Program Files/Common Files/Microsoft Shared/DAO