Wage Increment throws error

[Adam]

When attempting to perform an individual wage increment (via the dropdown in the employee form) I get the following error.
I'm not sure what the problem is here as everything seems to be set up okay. Could there be a problem with the additional modules being in the Server\server\openerp\downloaded\ directory?

Client Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\http.py", line 204, in dispatch
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\controllers\main.py", line 1128, in call_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\controllers\main.py", line 1120, in _call_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\session.py", line 42, in proxy
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\session.py", line 30, in proxy_method
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\session.py", line 103, in send

Server Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\addons\web\session.py", line 89, in send
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\netsvc.py", line 296, in dispatch_rpc
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\service\web_services.py", line 626, in dispatch
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\osv\osv.py", line 190, in execute_kw
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\osv\osv.py", line 132, in wrapper
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\osv\osv.py", line 199, in execute
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\.\openerp\osv\osv.py", line 187, in execute_cr
  File "C:\Program Files (x86)\OpenERP 7.0-20140622-231040\Server\server\openerp\downloaded\hr_wage_increment\wage_increment.py", line 244, in create
KeyError: 'contract_id'