It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I used to be able to play this game fine. I had a lot of fun with it. But I tried playing it again recently and it just won't stat. Double left click, right click then press open, not even running the game in administrator helps.
Making it all the more confusing is the fact that I've never modded this game. So it can't be down to that. And I've tried uninstalling and re-installing it. But nothing will make TL1 play again.

Any ideas why that is?

I'm on Windows 7