Script unexpectedly quits when too many files chosen

[BeakerMcChemist]

I have an AutoIt script that lets the user choose a folder containing the files, then processes the files one by one in an image processing program. It creates an array of file names and opens the files one at a time. When I have a folder with 50 files or more,  the script quits right after making the array. If I have 49 or less, it works perfectly. The code is below. I have a Windows 7, 64 bit system. I tried compiling it in 32 and 64 bit versions and it did the same thing.

Is there any reason why it should not work? Or is there a better way to pick files and go through the list one at a time?

;Define some variables upfront
$ProgName = "Fta32 Video 2.1"
$ProgAddress = "C:\Program Files (x86)\Fta32\FTA32.exe"

ChooseFolder()
$filesList = _FileListToArray ($sFileSelectFolder,"*.mdb")

WinActivate ($ProgName)
;_ArrayDisplay ($filesList)
For $j = 1 to _ArrayMaxIndex($filesList)
;Code to process files
Next

Func ChooseFolder()
    ; Create a constant variable in Local scope of the message to display in FileSelectFolder.
    Local Const $sMessage = "Select a folder"

    ; Display an open dialog to select a file.
    Global $sFileSelectFolder = FileSelectFolder($sMessage, "")
    If @error Then
        ; Display the error message.
        MsgBox($MB_SYSTEMMODAL, "", "No folder was selected.")
        Exit
    EndIf
EndFunc

 

[jchd]

The issue is using _ArrayMaxIndex($filesList); re-read help for understanding why.

Use Ubound($filelist) - 1 instead.

[BeakerMcChemist]

Thank you! That worked. Though I did not see where in the help file it talks about the limitations of _ArrayMaxIndex. 

[jchd]

Reread the help of this function: it doesn't do what you think it does. It returns the index of the greatest (sort-wise) element, compared to UBound which returns the number of elements in the given dimension or D1 by default.

[BeakerMcChemist]

AH! Now I see. I was lucky that the files just happened to be in alphabetical order. So the largest value was coincidentally the highest index. But on another set of files I had a different naming scheme and it was not in order. Thank you for the enlightenment.