Nominal link to sage 50 accounts not working

SUGGESTED

I've upgraded to V25 for both Sage payroll and accounts, the nominal link between sage payroll and accounts isn't working.  It displays an error message stating that the software may have been moved.  When I try to navigate it to the correct location by clicking 'retry' it keeps popping up with the same message, and if I close it shuts payroll down. Can anyone help please?