Is there a limit on the number of countries that can be loaded. Upon loading the 110th country I get the following error:

Exception Details: System.InvalidOperationException: Operation is not valid due to the current state of the object.

Source Error:

Stack Trace:

[InvalidOperationException: Operation is not valid due to the current state of the object.]
   System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded() +2420258
   System.Web.HttpValueCollection.FillFromEncodedBytes(Byte[] bytes, Encoding encoding) +58
   System.Web.HttpRequest.FillInFormCollection() +159

[HttpException (0x80004005): The URL-encoded form data is not valid.]
   System.Web.HttpRequest.FillInFormCollection() +217
   System.Web.HttpRequest.get_Form() +104
   System.Web.HttpRequest.get_HasForm() +9038047
   System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97
   System.Web.UI.Page.DeterminePostBackMode() +69
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +13

I'm loading via a SQL script, but the error occurs whether I load the 110th item through the script or manually through the admin section. My script looks like:

declare @sh int;
declare @sort int;

set @Sh=2;

INSERT INTO [TeaCommerce_Country]
           ([StandardCurrencyId]
           ,[Name]
           ,[CountryCode]
           ,[IsDefault]
           ,[IsDeleted]
           ,[VATGroupId]
           ,[Sort])
VALUES
(@sh, 'Sweden', 'SE', 0, 0, 1, 1), 
(@sh, 'United Kingdom', 'UK', 0, 0, 1, 1), ....

Thanks

Paul