Thx for the reply.
"When I start FF7 I get an error message saying: STATUS_INTERNAL_ERROR [Code:5].
Right-click the 7thHeaven.exe and set the compatibility to run as administrator. Apply and close.
Then find the FF7.exe you are using (ex. ff7.exe or ff7_bc.exe). Right-click and set compatibility to run in 640x480. Don't worry the OpenGL plugin will override this setting later. Go back into 7th Heaven and try launching the game."
Unfortunately, It didn't help.