"Failed to obtain a trial serial number"

[sdfgxcvb]

My old PC broke so I bought a new one, and I had to download and install RPGMXP again. However, any time I try to run RPG Maker, I get this error message:

What can I do to resolve this? Could the reason for this error be that I'm using Windows Vista? And before you ask, I have tried reinstalling it quite a few times, but to no avail. I have a legal copy and I've already purchased a serial for the full version although I'm unable to enter it in to validate it.

[Nightwolf]

You must've downloaded this from dowload.com or somewhere.

If you want, download the pk version from crankeye.com, or wait till nouman or someone comes and gives you the keygen thing

[Blizzard]

Vista is vistastic (vistastic = craptastic).
You're way better off if you don't use it.

[Zan]

Vista is vistastic (vistastic = craptastic).
You're way better off if you don't use it.

Truer words have never been spoken.
Today.
That I saw.

[Kokowam]

I think he actually bought it with money.

[Zan]

(Bursts out laughing hysterically)
(continues laughing for several minutes)
ok...it's ok...I'm all right now.