I am getting this error:

{"An attempt to attach an auto-named database for file D:\WORK\DocStore\DocStore\Database\DocStore.mdf\ failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share."}

I verified the file exists and is checked out for edit.

This is in my app.config:

Code:
<connectionStrings>
    <add name="DocStoreEntities" connectionString="metadata=res://*/Database.DocStore.csdl|res://*/Database.DocStore.ssdl|res://*/Database.DocStore.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|;Integrated Security=True;Connect Timeout=30;User Instance=True;MultipleActiveResultSets=True&quot;"
      providerName="System.Data.EntityClient" />
    <add name="DocStore.My.MySettings.DocStoreConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|;Integrated Security=True;User Instance=True"
      providerName="System.Data.SqlClient" />
  </connectionStrings>
I am populating the DataDirectory like this:

My.Settings.DatabaseLocation = "D:\WORK\DocStore\DocStore\Database\DocStore.mdf"

AppDomain.CurrentDomain.SetData("DataDirectory", My.Settings.DatabaseLocation)

Is it due to the "/" at the end of my .mdf\ ?

If it is, where is it coming from?

Any help would be greatly appreciated!

Thanks,
Eroc