Incomplete structured construct at or before this point in expression

Hello there,
I don't know if you have solved this or not but here is a possible solution. You actually had only a feww errors.

Have a great day!
Jaxon7
p.s. I added some code to display the output. Have f#n

#light

open System
open System.Windows.Forms
open System.Drawing
open System.Collections
open System.Collections.Generic
 

let lstfilename=ArrayList()
let filter = "NOOR files(*.t)|*.t|txt files(*.txt)|*.txt|all files(*.*)|*.*"
let mutable strfiledirectory=""
let mutable strfilename=""
let mutable spliter = [||]
 
let form=new Form()// in
form.Width <-400
form.Dock <-DockStyle.Fill
form.Height<-300
form.Text<-"findwords"
// RichTextView 
let textB = new RichTextBox()
textB.Dock <- DockStyle.Fill  
textB.Text <- "Hello World\n\nOK."
form.Controls.Add(textB)    

 
form.Load.Add(fun ea ->                      
               let listSpliter:List<char> = new List<char>()
               for inttemp1 in 126 .. 127 do               
                  listSpliter.Add(Convert.ToChar((byte)inttemp1))
               for inttemp1 in 176 .. 225 do
                  listSpliter.Add(Convert.ToChar((byte)inttemp1))
               listSpliter.Add(Convert.ToChar((byte)8))
               listSpliter.Add(Convert.ToChar((byte)9))
               listSpliter.Add(Convert.ToChar((byte)10))
               listSpliter.Add(Convert.ToChar((byte)13))
               listSpliter.Add(Convert.ToChar((byte)17))
               listSpliter.Add(Convert.ToChar((byte)0))
               listSpliter.Add(Convert.ToChar((byte)255))
               spliter <- listSpliter.ToArray() 
               form.Text <- String.Concat(spliter) 
               textB.Text <- form.Text
           )
form.ShowDialog()|>ignore
/pre></char></char>