Overlay question

Question

When I try to overlay instructions in a game I'm creating I get a script error.
So here's some excerpts of the code I'm using right now.
When the game begins
pIntro = 0
ch = g_world.newtexture("CrossHair", #fromcastmember, member("CrossHair"))
  g_world.camera[1].addoverlay(ch,point(400,300),0)
  ch.renderformat = #rgba8888
As the game is running
if pIntro = 0 then
    Aa = g_world.newtexture("Intr01", #fromcastmember, member("Intr01"))
    g_world.camera[1].addoverlay(Aa,point(160,340),0)
    Aa.renderformat = #rgba8888
    pIntro = 1
  end if
if pGameTime / 60 = 10 then
    g_world.camera[1].removeOverlay(2)
  end if
  if pGameTime / 60 = 12 then
    Bb = g_world.newtexture("Intr02", #fromcastmember, member("Intr02"))
    g_world.camera[1].addoverlay(Bb,point(160,340),0)
    Bb.renderformat = #rgba8888
  end if
So when I try to overlay Bb, I get:
Script error. Object with duplicate name already exists
Bb = g_world.newtexture("Intr02", #fromcastmember, member("Intr02"))
-2147196922
Why am I getting that error? I named the new texture something different.

Answer 1

Well according to your error message you never get so far as to create the overlay, the error occurs the line before you assign the texture, there clearly exists an instance of an texture with the same name at the time.
Also if you ran the program past the texture creation, saved your dir, then director won't remove it on resetworld, but since you checked inside the w3d member in your dir or cst we'll assume it's clean.
I sugest inserting a break point before or on the line causing the error and either through 3DPI, object inspector or through lingo code in the message window, checking to see if the texture exists.
Off the top of my head possible causes may be that:
you are calling this function more than once (pGameTime isn't updated before you reenter this function again?),
creating a texture with the same name somewhere else (do a search for "Intr02").
Other than that it's difficult to guess, the only way to be sure would be to step through the movie and see what happens, if you have a stripped down version of your game with the error I'd be willing to take a look.