CDD Timeout

I had this problem going in another thread, but it was getting to convoluted between this and the other problems I had. Since I now have all of my other problems solved I thought I'd start a new thread for the remaining one.

Currently I have a CDD control that, whenever I try to attach a ParentControlID to it, results in a script timeout error in IE. The cute thing is that the control will work fine if I keep the ParentControlID property out of the tag.

Here are the controls I currently have on my page. All of them work except for cddActivity9 which is my problem child.
<cc1:CascadingDropDownID="cddActivity1"runat="server"TargetControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetBusinessUnits"LoadingText="Loading values..."ServicePath="~/services/RefTables.asmx"Category="BU"/>
<cc1:CascadingDropDownID="cddActivity2"runat="server"TargetControlID="ACTIVITY_STATUS"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetActivityStatusForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="ACTIVITY_STATUS"/>
<cc1:CascadingDropDownID="cddActivity3"runat="server"TargetControlID="PERFORMANCE_UNIT"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetPerformanceUnitsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="PERFORMANCE_UNIT"/>
<cc1:CascadingDropDownID="cddActivity4"runat="server"TargetControlID="ENGR_PKG_REQ"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetEngLocationsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="ENGR_PKG_REQ"/>
<cc1:CascadingDropDownID="cddActivity5"runat="server"TargetControlID="EXPENSE_TYPE"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetExpenseTypesForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="EXPENSE_TYPE"/>
<cc1:CascadingDropDownID="cddActivity6"runat="server"TargetControlID="GFO"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetGFOForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="GFO"/>
<cc1:CascadingDropDownID="cddActivity7"runat="server"TargetControlID="WORK_LOCATION"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetWorkLocationsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="WORK_LOCATION"/>
<cc1:CascadingDropDownID="cddActivity8"runat="server"TargetControlID="RESPONSIBLE_GROUP"ParentControlID="PERFORMANCE_UNIT"PromptText=" "ServiceMethod="GetResponsibleGroupsForPU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="RESPONSIBLE_GROUP"/>
<cc1:CascadingDropDownID="cddActivity9"runat="server"TargetControlID="SUB_EXPENSE_TYPE"ParentControlID="EXPENSE_TYPE"PromptText=" "ServiceMethod="GetSubExpenseTypesForExpenseTypes"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="SUB_EXPENSE_TYPE"/>
<cc1:CascadingDropDownID="cddActivity10"runat="server"TargetControlID="SUB_RESPONSIBLE_GROUP"ParentControlID="RESPONSIBLE_GROUP"PromptText=" "ServiceMethod="GetSubResponsibleGroupsForResponsibleGroups"LoadingText="Loading values..."ServicePath="~/services/RefTables.asmx"Category="SUB_RESPONSIBLE_GROUP"/>
<cc1:CascadingDropDownID="cddActivity11"runat="server"TargetControlID="PLANNING_CATEGORY"ParentControlID="SUB_EXPENSE_TYPE"PromptText=" "ServiceMethod="GetPlanningCategoriesForSubExpenseTypes"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="PLANNING_CATEGORY"/
The ServiceMethod being called by the problem child looks as such:
[WebMethod]
publicCascadingDropDownNameValue[] GetSubExpenseTypesForExpenseTypes(string knownCategoryValues,string category)
{StringDictionary kv =CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues);
if(!kv.ContainsKey("EXPENSE_TYPE"))returnnewList<CascadingDropDownNameValue>().ToArray();

return GatherList(kv["EXPENSE_TYPE"],newREF_SUB_EXPENSE_TYPETableAdapter()).ToArray();
}

And I know it works, because it's identical to a similar method being called by cddActivity2 which does work.
[WebMethod]
publicCascadingDropDownNameValue[] GetActivityStatusForBU(string knownCategoryValues,string category)
{StringDictionary kv =CascadingDropDown.ParseKnownCategoryValuesString(knownCategoryValues);
if (!kv.ContainsKey("BU"))returnnewList<CascadingDropDownNameValue>().ToArray();

return GatherList(kv["BU"],newREF_ACTIVITY_STATUSTableAdapter()).ToArray();
}

Like I said, the control will work without a ParentControlID; I just need to workwith one is all. I've tried creating a new control, renaming the parent and child DropDownLists, using parent and child information from controls that worked and nothing has made a difference. I'm only looking at pulling max 7 records for this control so it's nothing too big. I've tried running both Fiddler and nikhilk's tool to no success.

Any ideas, shots in the dark, or pointing out where I missed/did something stupid would be appreciated.

Thanks,
Sean

Ok, strange as it is, a coworker found an answer to this problem and all it required was reordering the cascade controls. What he did was list all of the child-grandchild-etc... controls first and then the parent control last. It doesn't seem like this would matter for squat, but it works.

Here is the correct order we are using now.

<cc1:CascadingDropDownID="cddActivity5"runat="server"TargetControlID="EXPENSE_TYPE"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetExpenseTypesForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="EXPENSE_TYPE"/>
<cc1:CascadingDropDownID="cddActivity9"runat="server"TargetControlID="SUB_EXPENSE_TYPE"ParentControlID="EXPENSE_TYPE"PromptText=" "ServiceMethod="GetSubExpenseTypesForExpenseTypes"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="SUB_EXPENSE_TYPE"/>
<cc1:CascadingDropDownID="cddActivity11"runat="server"TargetControlID="PLANNING_CATEGORY"ParentControlID="SUB_EXPENSE_TYPE"PromptText=" "ServiceMethod="GetPlanningCategoriesForSubExpenseTypes"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="PLANNING_CATEGORY"/>
<cc1:CascadingDropDownID="cddActivity3"runat="server"TargetControlID="PERFORMANCE_UNIT"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetPerformanceUnitsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="PERFORMANCE_UNIT"/>
<cc1:CascadingDropDownID="cddActivity8"runat="server"TargetControlID="RESPONSIBLE_GROUP"ParentControlID="PERFORMANCE_UNIT"PromptText=" "ServiceMethod="GetResponsibleGroupsForPU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="RESPONSIBLE_GROUP"/>
<cc1:CascadingDropDownID="cddActivity10"runat="server"TargetControlID="SUB_RESPONSIBLE_GROUP"ParentControlID="RESPONSIBLE_GROUP"PromptText=" "ServiceMethod="GetSubResponsibleGroupsForResponsibleGroups"LoadingText="Loading values..."ServicePath="~/services/RefTables.asmx"Category="SUB_RESPONSIBLE_GROUP"/>
<cc1:CascadingDropDownID="cddActivity2"runat="server"TargetControlID="ACTIVITY_STATUS"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetActivityStatusForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="ACTIVITY_STATUS"/>
<cc1:CascadingDropDownID="cddActivity4"runat="server"TargetControlID="ENGR_PKG_REQ"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetEngLocationsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="ENGR_PKG_REQ"/>
<cc1:CascadingDropDownID="cddActivity6"runat="server"TargetControlID="GFO"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetGFOForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="GFO"/>
<cc1:CascadingDropDownID="cddActivity7"runat="server"TargetControlID="WORK_LOCATION"ParentControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetWorkLocationsForBU"LoadingText="<%$ Resources:Resource, CCDDLoadingText %>"ServicePath="~/services/RefTables.asmx"Category="WORK_LOCATION"/>
<cc1:CascadingDropDownID="cddActivity1"runat="server"TargetControlID="BUSINESS_UNIT"PromptText=" "ServiceMethod="GetBusinessUnits"LoadingText="Loading values..."ServicePath="~/services/RefTables.asmx"Category="BU"/>