Problem with reports

[Wm]

Fri, 20 Feb 2015 20:44:17 
<CA+FKb435xPD+mqjf-YQsGCyHnt4iix-GeJQP+7nHYebuF0JGLg at mail.gmail.com> 
"lore at lorus.org" <lore at lorus.org>

>Hi, when I try generate any report eg. "Reports" -> "Account Summary"
>I get the following error: "Error opening file: Invalid argument"
>
>I'm using Gnucash 2.6.5 on windows 7.
>
>Can someone please assist me?

Have you created a file?

What does it say in the bar at the top left of the GnuCash window?  It 
should have the GnuCash icon and the name of the file.

If you forget about reports for a moment and look at the Accounts tab do 
you have a sensible Assets, Equity, Expenses, Income, Liability type 
CoA?

-- 
Wm...