Android Question Release mode on tablet not working

this is my code

Sub Activity_Create(FirstTime As Boolean)
'Do not forget to load the layout file created with the visual designer. For example:
Private lstSuburbs As List
lstSuburbs.Initialize

sql.Initialize("/storage/emulated/0","Taxi.sqlite",False)
Msgbox("hello","")
Private cur As Cursor
cur = sql.ExecQuery("Select Suburb From Suburbs Order by Suburb Desc")
cur.Position=0

'Msgbox(cur.RowCount,"")

Activity.LoadLayout("Taxi1")
'Msgbox("Welcome to B4A test!", "")

Dim i As Int = 0

For i=0 To cur.RowCount-1
lstSuburbs.Add(cur.GetString("Suburb"))
cur.Position=cur.Position+1
Next

'Msgbox(cur.RowCount,"")

acetFrom.SetItems(lstSuburbs)
acetTo.SetItems(lstSuburbs)

End Sub

it crashed at the sql.Initialize - this works in debug mode but not in release mode