My SharePoint set-up is SharePoint 2010 Standard v 14.0.4769.1000 on a Windows 2008 R2 Standard farm.
I'm experiencing a problem with a custom list and some changes I've made to the form using
SPServices Cascading Drowpdowns function. I've created a brand new "NewForm.aspx" and inserted my code. Having tested it, it appears to work, so I've proceeded to set it as the default.
Upon it being released, I've had a few people test it, at which point I generate an Unknown Error" and associated error message in the ULS (see below for these). The form is attached to a brand new custom list that's had a custom content type
attached to it. It's not been migrated from previous versions of SharePoint. All customisation work has been done in SPD.
Upon restoring the original form, items can be submitted to the list as expected.
Looking at the ULS, I get the following errors: -
ULS Error One
MetadataNavigationContext Page_InitComplete: No XsltListViewWebPart was found on this page[/departments/applications/Lists/opslog/NewForm_VAST.aspx?RootFolder=%2Fdepartments%2Fapplications%2FLists%2Fopslog&ContentTypeId=0x010047430656E3F149B0B52DBE74F9CF6E0900398159A5A0253E448CA966FB22473939&IsDlg=1].
Hiding key filters and downgrading tree functionality to legacy ListViewWebPart(v3) level for this list.
ULS Error Two
System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using
<pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.
For security purposes, this feature verifies that arguments to postback or callback events originate
from the server control that originally rendered them. If the data is valid and expected,
use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System.Web.UI.WebControls.DropDownList.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.Page.ProcessPostData(NameValueCollection pos... 3dc7dd70-0d1b-481c-b92a-ea81d029cce7
If anyone has any suggestions or ideas as to where I can look, I'd be happy to hear them. I appreciate that this may not be a SPS related query but if anyone has seen this before, I'd appreciate some commentary