New Post: offline openstreetmap?

Yes, I have read the documentation. Yes, it is still occurring, although I haven't pursued finding a solution since writing those messages. It is MapWinGIS 4.9.3.6

The project (Access 2003) has a MW map that is scrollable and zoomable. It is configured to cache the tiles whenever the map is panned or zoomed, so that by scrolling thru the whole project area at various zoom levels, I can capture all the tiles that are needed for offline viewing. It is workable, but not ideal.

Next I added a command button to the map's form that does two tasks: it displays the map's current zoom level, and it attempts to Prefetch the map at the current zoom level. For now, the map extents of the capture area are hardwired, but that could be changed in the future. The computer is connected to the Internet via WiFi, and I use Airplane mode to toggle its Internet connectivity.

Finally, checkbox on the form toggles the Prefetch statement on and off. If the checkbox causes the Prefetch statement to be bypassed, then the code runs more-or-less perfectly (some issues with scrolling beyond the cached area). However, if the Prefetch statement is executed, then Access crashes every time. Here is the offending code behind the command button:

Private Sub InfoCache_Click()
Dim se As New MWStopExecution
Dim sFilename As String
Dim sPathname As String

With axMap.Tiles
    MsgBox "Current tile zoom: " & .CurrentZoom
    .DoCaching(tkCacheType.RAM) = True
    .DoCaching(tkCacheType.Disk) = True
    dhParsePath CurrentDb.Name, sPathname, sFilename
    .DiskCacheFilename = sPathname & "\" & APPLICATIONNAME & ".db3"
    .MaxCacheSize(tkCacheType.Disk) = 500
    If chkOfflineMaps Then
        .Prefetch 48.9, 50.2, -123.2, -119.2, .CurrentZoom, tkTileProvider.OpenStreetMap, se
    End If
End With

End Sub

Would be great if you could look into it, and I am willing to test any solution that you find.