Trouble with 3.316 update - FIX: Do Remove -vs- Update

[Harryoke]

I am running XP on an MTU built mini PC. I do not take the machine online for any reason other than dl'ing updates.

When attempting to install 3.316, I got the following Exception Notice:

UNHANDLED EXCEPTION
Error Number 0x80040703
Description: Failed to find DLL function: _ismtu.SetProdId
Setup will now terminate.

I came to the forum to seek an answer, and after reading the thread, updated my XP with windows update, restarted and reattempted the update with the exact same results.

If the only change is adaptability to Vista, this is not the end of the world for me for now, until I possibly upgrade in the future to a laptop which I assume will be running Vista.

How long are free updates available? When 4.0 comes out, will that be a paid upgrade for everyone? Is there a downside for me to NOT make an effort to upgrade to 3.316 if I am not planning on using Vista in the near future?

THANKS.