Hi KDD,
It is possible that Field Service was activated on your clients' system.
Try modifying your dynamics.set file and remove the following lines:
949
FieldService
:C:Program Files (x86)/Microsoft Dynamics/GP2010/SrvcAdv.DIC
:C:Program Files (x86)/Microsoft Dynamics/GP2010/Data/FRMS949.DIC
:C:Program Files (x86)/Microsoft Dynamics/GP2010/Data/RPTS949.DIC
NOTE: the path of 3 line above depends on the path where your gp is installed.
I highly recommend that you read support.microsoft.com/.../872087 if you are not familiar with modifying the dynamics.set file.
Kind Regards,
Tristan