Object reference not set to an instance of an object

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Hey,

So i am currently coding a web browser. At the moment there is a splash screen, it does a basic search for a update. If no update found then it continues to launch Form1 which is my main form. This is where this error happens. Here's a screenshot:

http://gyazo.com/e04bf2e4f2697df91325fdaf00f82912[

This error occurs when switching from Form6 (Slashscreen) to Form1 (Main Form)

Here is the current code ive got on Form6:

VB

Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
        currentversion.Visible = True
        FlatProgressBar1.Increment(1)
        If FlatProgressBar1.Value = 33 Then
            CheckForUpdates()
            FlatStatusBar9.Text = "Checking for Updates!!"
            Me.Refresh()
            Timer1.Interval = 25
        End If
        If FlatProgressBar1.Value = FlatProgressBar1.Maximum Then
            FlatStatusBar9.Text = "Done! No updates found"
            currentversion.kind = currentversion._Kind.Success
            currentversion.Text = "Complete! No Updates Found"
            Me.Refresh()
            Form1.Show()
            Me.Close()
        End If
    End Sub

Let me know if you need any more information, seems a little annoying im not getting any error messages in VB ,but when i debug and build, it shows this error.

Posted 28-Aug-14 7:18am

Member 11043556

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PhilLenoir 28-Aug-14 14:10pm

You should implement a try/catch block to catch the exception. If you're running in debug, you should see the line that causes the error. If it's at run-time, the error display should show the line number. Turn on line numbers and you should be able to tell exactly what the problem is.

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OriginalGriff · Answer 1 · 2014-08-28T08:15:00

Don't be annoyed: they are different types of error.
The errors "you get out of VB" are called compilation errors.
The error you are getting now is called a runtime error, and it can;t be detected at compile time - because it is an error in your logic as expressed in the program, not in the language used to express it.

It's similar to English:
"The toast on child marmalade spread" is not an English sentence: it fails the syntax checks - it's has compilation errors
"The child spread marmalade on toast" is an English sentence: it doesn't fail syntax checks.
"The toast spread child on marmalade" is also an English sentence: it passes the syntax checks, but fails the logic tests in that it makes no sense.

So your program passes the Syntax (compilation) checks, but has run time errors (what it is doing makes no sense).

Exactly why not is not something we can answer: not without more information. But you can: you can use the debugger to tell you. When the error happens, the debugger will stop executing and show you which line is causing the problem. Don't stop executing there! Use the debugger to see exactly which part of the line is wrong by hovering the mouse over the variables: something in it is evaluating to a null (Nothing in VB) followed by a '.' and a property or method. Since it is null (Nothing) it can't be on the left of a '.' because there is no object to make the method work on!

Why is it null? Don;'t know - but once you know what it is, it's generally a fairly simple matter to look back through your code to find out why it isn't set to anything. And if that doesn't show it up, put a breakpoint at the start and step through your code.

We can't do any of that for you: but it's a lot simpler than it sounds!