You can also just download and run the overlay.exe to be sure.
Well. I'm lost. Do you close CTF2.5 before installation? If you leave it open the extension will not work. So close and reopen.
Maybe. May I suggest you seek further help from forum members.
Hi, just thought I would offer some advice on the openGL ext's. I used them a while ago (https://www.youtube.com/watch?v=5geed9LSh6Y) along with the lua object and found it was quite tasking.
Whilst I haven't used firefly Extension from what i have seen it looks better and easier but unfortunatly isnt free. (http://clickstore.clickteam.com/firefly) but I would recommend that over the older openGL extensions that I believe are no longer supported.