Guild Wars 2

Hey…..I just downloaded the new patch moments ago and somehow it broke my client! Running Win 8. here is the error:

—> Crash <—
Assertion: hdr->signature == PACKFILE_SIGNATURE
File: ..\..\..\Services\Packfile\Packfile.cpp(1821)
App: Gw2.exe
Pid: 6040
Cmdline:
BaseAddr: 00400000
ProgramId: 101
Build: 16597
When: 2013-01-31T03:58:47Z 2013-01-30T19:58:47-08:00
Uptime: 0 days 0:00:03
Flags: 0

Any ideas on how to fix this? I don’t want to have to download the entire client again.

I was able to update just fine before the ninja patch. After the patch on Jan.30 and my client ‘restarted’, I am unable to open the client. No error, it simply doesn’t show, but appears to be standing still in memory every time I attempt to open it. (There is another forum post where someone has the same problem: https://forum-en.gw2archive.eu/forum/support/tech/GW2-exe-stands-still-on-memory/first#post1336961)

Edit After cancelling the process that was taking up the most memory, the client opened and is now updating.

Edit Game is functioning, as well.