I found the problem and got my timers running for my version. It's indeed a NI issue! In my case, IWD in BG2 was not recognized as a BG2 game by NI. By adding the "baldur.exe" file to my root directory, NI now recognize the game as BG2 and the scripts are working as they should!
I don't know if it's the same issue for Vlad but be sure to check wich game NI is checking before compiling your script.
Edit: I'm using the latest snapshot of NI v1.36 20151112