diff --git a/package.json b/package.json
index eefcc0d94..ee8edde7e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "issie",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "description": "Schematic editor and Simulator",
   "homepage": "https://github.com/tomcl/issie",
   "bugs": {
@@ -39,7 +39,7 @@
     "title": true
   },
   "build": {
-    "appId": "ISSIE.111",
+    "appId": "ISSIE.112",
     "asar": true,
     "win": {
       "target": "zip"
diff --git a/src/Renderer/Interface/FilesIO.fs b/src/Renderer/Interface/FilesIO.fs
index 832584afa..e315c5ffe 100644
--- a/src/Renderer/Interface/FilesIO.fs
+++ b/src/Renderer/Interface/FilesIO.fs
@@ -73,7 +73,9 @@ let latestBackupFileData (path:string) (baseName: string) =
             |> fun n -> n,fn)
     |> List.sortDescending
     |> List.tryHead
-    |> Option.bind (function | None,_ -> None | Some n, fn -> Some(n, fn))
+    |> Option.bind (function 
+        | None,_ -> None 
+        | Some n, fn -> Some(n, fn))
 
 /// read canvas state from file found on filePath (which includes .dgm suffix etc).
 /// return Error if file does not exist or cannot be parsed.
@@ -298,7 +300,6 @@ let loadAllComponentFiles (folderPath:string)  =
     match x with
     | Error msg -> Error msg
     | Ok x ->
-        printfn "loadAllComponentFiles %s %A" folderPath (x |> Seq.toList)
         x
         |> Seq.toList
         |> List.filter (path.extname >> ((=) ".dgm"))
diff --git a/src/Renderer/Interface/Version.fs b/src/Renderer/Interface/Version.fs
index 6653939e4..6bedb0919 100644
--- a/src/Renderer/Interface/Version.fs
+++ b/src/Renderer/Interface/Version.fs
@@ -1,5 +1,5 @@
 module Version
-let VERSION = [ 1 ; 1 ; 1]
+let VERSION = [ 1 ; 1 ; 2]
 
 // The first 12  white-space separated words in this file must be in the above format - note that spaces are required.
 // This works as valid F# data for displaying the code version and can also be read programmatically from the master branch github file
diff --git a/src/Renderer/UI/FileMenuView.fs b/src/Renderer/UI/FileMenuView.fs
index de38ac503..87a2d6f5e 100644
--- a/src/Renderer/UI/FileMenuView.fs
+++ b/src/Renderer/UI/FileMenuView.fs
@@ -76,32 +76,37 @@ let writeComponentToFile comp =
     let data =  stateToJsonString (comp.CanvasState,comp.WaveInfo)
     writeFile comp.FilePath data
 
-/// return an option containing sequence data and file path of the latest
+/// return an option containing sequence data and file name and directory of the latest
 /// backup file for given component, if it exists.
 let readLastBackup comp =
     let path = pathWithoutExtension comp.FilePath 
     let baseN = baseName path
     let backupDir = pathJoin [| dirName path ; "backup" |]
     latestBackupFileData backupDir baseN
+    |> Option.map (fun (seq, fName) -> seq, fName, backupDir)
   
 
 
 /// Write comp to a backup file unless the latest backup canvas is within numChanges distance from 
 /// the comp canvas.
 let writeComponentToBackupFile numChanges comp = 
-    let nSeq, backFilePath =
+    let nSeq, backupFileName, backFilePath =
         match readLastBackup comp with
-        | Some( n, fp) -> n+1,fp
-        | None -> 0, ""
+        | Some( n, fp, path) -> n+1,fp, path
+        | None -> 0, "", pathJoin [|comp.FilePath; "backup"|]
+    //printfn "seq=%d,name=%s,path=%s" nSeq backupFileName backFilePath
     let wantToWrite =
-        if backFilePath = "" then
+        if backupFileName = "" then
             true
         else
-            match tryLoadComponentFromPath backFilePath with
+            let oldBackupFile = pathJoin [|backFilePath ; backupFileName|]
+            match tryLoadComponentFromPath (oldBackupFile) with
             | Ok comp' ->
                 let nComps,nConns = quantifyChanges comp' comp
-                nComps + nConns  >= numChanges
-            | _ -> true
+                nComps + nConns  > numChanges
+            | err -> 
+                printfn "Error: writeComponentToBackup\n%A" err
+                true
     if wantToWrite then       
         let path = pathWithoutExtension comp.FilePath
         let baseN = baseName path
@@ -111,7 +116,6 @@ let writeComponentToBackupFile numChanges comp =
         ensureDirectory <| pathJoin [| dirName path ; "backup" |]
         let backupDir = pathJoin [| dirName path ; "backup" |]
         let backupPath = pathJoin [| dirName path ; "backup" ; sprintf "%s-%03d-%s.dgm" baseN nSeq suffix |]
-        printfn "Writing backup file to %s" backupPath
         {comp with 
             TimeStamp = timestamp
             FilePath = backupPath}
@@ -196,11 +200,10 @@ let updateLoadedComponents name (setFun: LoadedComponent -> LoadedComponent) (lc
         printf "In updateLoadedcomponents can't find name='%s' in components:%A" name lcLst
         lcLst
     | Some n ->
-        let newLc = setFun lcLst.[n]
-        let nComps,nConns = quantifyChanges newLc lcLst.[n]
-        if nComps + nConns > 0 then
-            writeComponentToBackupFile 0 newLc
-        List.mapi (fun i x -> if i = n then setFun x else x) lcLst
+        let oldLc = lcLst.[n]
+        let newLc = setFun oldLc
+        writeComponentToBackupFile 0 oldLc
+        List.mapi (fun i x -> if i = n then newLc else x) lcLst
 
 /// return current project with current sheet updated from canvas if needed
 let updateProjectFromCanvas (model:Model) =
@@ -265,7 +268,9 @@ let saveOpenFileAction isAuto model =
                     let savedWaveSim =
                         Map.tryFind project.OpenFileName (fst model.WaveSim)
                         |> Option.map waveSimModel2SavedWaveInfo
-                    Some (makeLoadedComponentFromCanvasData state origLdComp.FilePath DateTime.Now savedWaveSim, reducedState))
+                    let newLdc, newState = makeLoadedComponentFromCanvasData state origLdComp.FilePath DateTime.Now savedWaveSim, reducedState
+                    writeComponentToBackupFile 4 newLdc
+                    Some (newLdc,newState))