I have just upgraded to 7.2.2 in hopes that there would be a magic fix in there somewhere, but alack and alas, no such luck.

The problem is as simple as I stated, I have a number of upload properties for my members and for whatever reason this is causing Umbraco to go sideways when I try to delete members. If I change the upload properties to textstring (I didn't test, but probably any other datatype would work too), the members delete without issue. Change them back to upload and bam no more deleting. I have tried deleting from the backend in the listview, using the action button, and also by calling MemberService.Delete(IMember) but to no avail. Always the same result.

In the backend, this is the message I get when trying to delete a member:

Server error: Contact administrator, see log for full details.
Failed to delete item 9079bddc631147f09605b3e46cf4b4cd

But there is nothing in any log (at least none that I can find...)

In the Firebug console I get a bit more:

When I try with the API call, here is the complete stacktrace that I get:

Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error: 


Line 24:     
Line 25:         ms.Delete(m);
Line 26:         

Source File: d:\[ Websites ]\Webmatrix\QSI Umbraco 7 MVC\Views\Partials\recruitingToolsMemberCleanup.cshtml    Line: 25 

Stack Trace: 


[NullReferenceException: Object reference not set to an instance of an object.]
   Umbraco.Core.Persistence.Repositories.MemberRepository.PersistDeletedItem(IMember entity) +178
   Umbraco.Core.Persistence.Repositories.RepositoryBase`2.PersistDeletedItem(IEntity entity) +49
   Umbraco.Core.Persistence.UnitOfWork.PetaPocoUnitOfWork.Commit(Action`1 transactionCompleting) +124
   Umbraco.Core.Persistence.UnitOfWork.PetaPocoUnitOfWork.Commit() +7
   Umbraco.Core.Services.MemberService.Delete(IMember member) +140
   ASP._Page_Views_Partials_recruitingToolsMemberCleanup_cshtml.Execute() in d:\[ Websites ]\Webmatrix\QSI Umbraco 7 MVC\Views\Partials\recruitingToolsMemberCleanup.cshtml:25
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +96
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +88
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +257
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +93
   System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) +276
   System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) +108
   System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName) +31
   ASP._Page_Views_RecruitingToolsMemberCleanup_cshtml.Execute() in d:\[ Websites ]\Webmatrix\QSI Umbraco 7 MVC\Views\RecruitingToolsMemberCleanup.cshtml:21
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +96
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +76
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +257
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +93
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +294
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +23
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +242
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +21
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +242
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +21
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +175
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +89
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +102
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +57
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +43
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +57
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +47
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9676252
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34237

I don't know if it is related, but there do seem to be some others with a similar issue: http://issues.umbraco.org/issue/U4-6113, https://our.umbraco.org/forum/developers/api-questions/60471-Cannot-delete-member-721, and this is the one that made me think to try experimenting with the upload field in the first place https://our.umbraco.org/projects/collaboration/dialogue/general/60604-Unable-to-delete-Dialogue-members.

If there was a way to switch members to a different member type and dump all the custom properties in the move, that would work, but AFAIK that is not possible, but I would be very happy to be wrong.

I am really hoping for a fix here. I have members that I really need to delete but can't, and switching all the upload fields to something else dosen't really seem like a solution as I am pretty sure that doing so would completely FOOBAR all the data stored in those fields for the member accounts that I don't want to delete.

Cheers!