Fix

message.xml

@@ -45,7 +45,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="text">Missing default values for workday or restday on configuration!</field>
         </record>
         <record model="ir.message" id="msg_invalid_formula">
-            <field name="text">Invalid formula [ %formula ] for unit price!</field>
+            <field name="text">Invalid formula "%(formula)s" for unit price!</field>
         </record>
     </data>
 </tryton>

tryton.cfg

@@ -1,5 +1,5 @@
 [tryton]
-version=6.0.6
+version=6.0.8
 depends:
     party
     currency

wage_type.py

@@ -171,12 +171,13 @@ class WageType(ModelSQL, ModelView):
             return Decimal('0.0')
         if args.get('salary') != None:
             salary = float(args['salary'])
-        try:
+        print('formula ....', formula)
+        if 1: #try:
             value = Decimal(str(round(eval(formula), 2)))
             return value
-        except Exception:
-            raise WageTypeValidationError(
-                gettext('staff_payroll.msg_invalid_formula', formula=formula))
+        # except Exception:
+        #     raise WageTypeValidationError(
+        #         gettext('staff_payroll.msg_invalid_formula', formula=formula))
 
 
 class WageTypeSalary(ModelSQL):