Some more information about your problem would be helpful. DVDA most certainly does support more than two subtitle tracks. It supports 32 such tracks per media.
ok,
--amd 3 meg, raid sata, 1,5 gig ram, asus deluxe board--
i`m putting the subtitels on our recent Feauture for DVD, (i like the vegas architect combination it, handy, logical, useful and works normaly fine).
rendering The DVD on the third subtitel asigned Arch. pops up after doing 80% of work with an error. .....cant go on cause of to complicated grafics or subtitels.....there are no complicated grafics...
Please download and install the latest update of DVDA2 (DVDA 2.0a build 121). Before you prepare, DVDA will now check all subtitles and tell you which ones are too complex.
That's not due to how many subtitle tracks you have. It's because some of your subtitle events have too much data in them. Subtitles are limited to a certain amount of data. This is affected not only by how many characters are any a particular subtitle event, but also the size, what kind of formating is used, maybe even which font is used (not sure about this). It's possible to get that error even if you have one subtitle track.
As Sony mentions in their reply, the latest update actually warns you about complex subtitles before you prepare. Not sure how specific the warning is.
I've already installed version 2.0a that shows exactly where the problem is located: it indicates title, subtitle track (1, 2 or 3 on the timeline) and position. That's great....