1) Definitely a hardware thing if it'll take WoW and not Savage. I would also check your connection settings in your System Options panel. If you have max packet size set to 1536+ (higher than that number) Then you'll get artificial packet loss which will cause you to lock-up in the map load-out. I did the exact same thing, setting it to 2048, then 2000, and I was locking-up at the map load-out. A good number is the default 1000, to a maximum of 1250 (this also depends on your hardware). Also be sure that your Net BPS isn't higher than the default, having it higher than the default can cause map load-out problems as well, another thing that I messed around with and had horrible results.
2) I would check these two posts for some information:http://www.newerth.com/smf/index.php?topic=11542.0http://www.newerth.com/smf/index.php?action=printpage;topic=1622.0
Same problem, but the second topic doesn't give a solution (However it does explain the problem in a bit more detail)
2 -continued) I would suggest setting your connection settings to their defaults and see if that will fix the problem. Like I said, setting them too high will cause artificial packet loss
, which as described by the posts I said to check out, leads to the SV INVALID FRAME
For the most part, it's exceptionally helpful if we knew your OS, Hardware, and connection
, because Savage likes to do funny things on Windows 7 and Vista, and not only that, if you have low-end hardware, it may be causing packet loss (like using old windows 95 hardware which won't work that well with Savage). And Connection is mostly looking at Dial-up, DSL, or Wireless. Wireless isn't too friendly with online gaming, so definitely try a hard-wired connection if you suspect it to be a wireless problem.