据检查，该错误只有在下推生成表单时才会出现，
在申请金额栏位填完数值后取消焦点时报错。
表单内除了审核金额5000是插件计算，其他都是下推带出。
新增表单按照下推的表单一模一样进行填值，不会报错。
用VS跟踪插件工作，在datachanged事件里无法捕捉该错误。
且一张表单只会触发一次
The value "Microsoft.Scripting.Interpreter.InterpretedFrameInfo" is not of type "System.String" and cannot be used in this generic collection.
Parameter name: key
发生时间：15:34:38
错误来源： mscorlib
错误信息：The value "Microsoft.Scripting.Interpreter.InterpretedFrameInfo" is not of type "System.String" and cannot be used in this generic collection.
Parameter name: key
===================================================
调用堆栈：
at System.ThrowHelper.ThrowWrongKeyTypeArgumentException(Object key, Type targetType)
at System.Collections.Generic.Dictionary`2.System.Collections.IDictionary.set_Item(Object key, Object value)
at Microsoft.Scripting.Interpreter.Interpreter.HandleException(InterpretedFrame frame, Exception exception)
at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)
at Microsoft.Scripting.Interpreter.LightLambda.Run2[T0,T1,TRet](T0 arg0, T1 arg1)
at IronPython.Compiler.PythonScriptCode.RunWorker(CodeContext ctx)
at IronPython.Compiler.RuntimeScriptCode.InvokeTarget(Scope scope)
at Kingdee.BOS.Scripting.PyExpressionEvaluator.Run(Expression expression, ExpressionContext context)
at Kingdee.BOS.Business.DynamicForm.BusinessService.Calculate.DoAction(FormBusinessServiceArgs e)
at Kingdee.BOS.Core.DynamicForm.FormBusinessServiceUtil.InvokeServices(IDynamicFormView view, Object source, IEnumerable`1 services, Int32 actionType, String activeEntity, DynamicObject activeRow, Int32 rowIndex)
at Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.InvokeFormBusiness(IDynamicFormView view, Object source, List`1 formBusinessServices, Int32 actionType, String entityKey, Int32 row)
at Kingdee.BOS.Web.DynamicForm.BusinessServiceCaller.CallUpdateBusinessService(FieldAppearance fieldAppearance, Int32 row)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormView.UpdateValue(String key, Int32 row, Object value)
at Kingdee.BOS.Web.Bill.BillView.UpdateValue(String key, Int32 row, Object value)
at Kingdee.BOS.Web.DynamicForm.DynamicWebFormController.UpdateValue(String key, Object value, Int32 row, JSONArray postDatas)
错误数据： System.Collections.ListDictionaryInternal
推荐阅读