Path/File access error

I have to open my file from a new Excel window. If I try to open it from the
existing window (even when I close this file and reopen it in the same
window), I get "Path/File access error", and when I click "OK", it says
"Run-time error '75': Could not find the specified object.". If I click
"Debug", it goes to the VB Editor and shows that everything in the Project
Explorer window is gone. It seems that the program cannot open the
initializing form when the Project Explorer shows empty. How to fix this
problem?

Hello,

I am trying to open a Userform in MS excel 2003 using the following VBA command:

[Code]
Private Sub Image6_Click()
Unload Me
UserForm011.Show
End Sub
[\Code]

By calling the above code I have this error:
Path/File access error

After I press Ok it comes another error:
Run-time error ‘75’:
Could not find the specified object.

Does anybody knows what is happening?

Thank you!