We have PDM not EPDM

Using the following code:

       Dim swapp As New SldWorks.SldWorks
        Dim swDoc As SldWorks.ModelDoc2
        Dim errors As Integer
        Dim warnings As Integer
        Dim fileName As String = "path to my file"
        swDoc = swapp.OpenDoc6(fileName, swDocumentTypes_e.swDocPART, swOpenDocOptions_e.swOpenDocOptions_Silent, "", errors, warnings)

When I load an assembly I am getting the error 2097152. That translates to:

swFileRequiresRepairError 2097152 or 0x200000 = A document has non-critical custom property data corruption 

The file does not load but I get the value Nothing instead.

I can load the file manually in the app and get no warnings. I also look at "file properties" and do not see anything wrong.

I have tried this with numerous combinations of files checked out and not checked out. Nothing allows me to load the file.

Any tips? Is there a way to repair a file if this happens?