ios - Strange UITableView error: "Assertion Failure" on dequeuing static cells in storyboard -

i getting error: *** assertion failure in -[uitableview dequeuereusablecellwithidentifier:forindexpath:] static cells.

my code in swift (the reuse identifiers strings set constants in file):

... private let toptableviewcellidentifier = "toptableviewcell" private let bottomtableviewcellidentifier = "bottomtableviewcell" ...

    override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {      let reuseidentifier = (indexpath.section == 0) ? toptableviewcellidentifier : bottomtableviewcellidentifier       let cell = tableview.dequeuereusablecellwithidentifier(reuseidentifier, forindexpath: indexpath)     return cell } 

i have searched stack overflow error, , found bunch of answers saying same thing: make sure reuse identifier same 1 cell in storyboard.

however, in case, is.

i have confirmed repeatedly, , have cut , pasted 1 other repeatedly in order ensure case. xcode indicates correct value being set. have cleaned. have restarted. have done can think of, , not see cells in storyboard. set static, , correct class being set in inspector (though should clear fact gets correct value)

any thoughts or assistance appreciated. using el capitan , xcode 7.

if attempting use static layout table view, typically not implement tableview:cellforrowatindexpath:, uitableviewcontroller you. invalid call dequeuereusablecellwithidentifier:forindexpath: method statically configured uitableview (as error indicates).