332669 SQL App_Data folder

I installed HELM 4 upgrade to my server and lost ability to attach .mdf file located in the App_Data folder. I moved to a new server and am having the same issue. Exception Details: [login to view URL]: User does not have permission to perform this action. I need [login to view URL] DNN install to pass the Database check when using an .mdf file in the App_Data folder. [login to view URL] is having the same issue, throwing the exception listed above. I can attach an .mdf file and create a user. Using an attached db works fine. The install is sqlExpress. Some of the things I've looked at: NT Authority/Network Services can log onto SQL server, read/write in the website folder. Using the Surface Configuration utility, I've checked for allowing remote and local connections. (It was already set as I understand this to be the default for the Express version) When I try to run [login to view URL] I find the following in the Application Event Log Source: ASP.NET 2.0.50727.0 Category: Web Event Type: Warning EventID: 1309 User: N/A Computer: CA207 Description: Event code: 3005 Event message: An unhandled exception has occurred. Event time: 7/3/2009 1:21:33 PM Event time (UTC): 7/3/2009 6:21:33 PM Event ID: 326052e98d844710953f9c0393162cc8 Event sequence: 49 Event occurrence: 24 Event detail code: 0 Application information: Application domain: /LM/W3SVC/96687/Root-4-128910717577472774 Trust level: Full Application Virtual Path: / Application Path: E:\Inetpub\[login to view URL]\www\ Machine name: CA207 Process information: Process ID: 3676 Process name: [login to view URL] Account name: NT AUTHORITY\NETWORK SERVICE Exception information: Exception type: TargetInvocationException Exception message: Exception has been thrown by the target of an invocation. Request information: Request URL: [login to view URL] Request path: /[login to view URL] User host address: [login to view URL] User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE Thread information: Thread ID: 1 Thread account name: NT AUTHORITY\NETWORK SERVICE Is impersonating: False Stack trace: at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at [login to view URL](Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at [login to view URL](Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at [login to view URL](Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at [login to view URL](ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance) at [login to view URL](DataSourceSelectArguments arguments) at [login to view URL]() at [login to view URL](Boolean useDataSource) at [login to view URL](EventArgs e) at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL]() at [login to view URL](Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)