Guild Wars 2

I have been playing guild wars since feburary, with no issues. But as of the end of june beginning of july i have been riddled with Critical Errors. i can no longer play the game for no more then 20-30 mins at a time and every time it crashes it give me a different error. My memory is good, i have 8gb of ram and a 6 core processor (AMD FX6100) and a Raydeon 9700 hd graphics card running off Windows 7 64 bit. I have uninstalled the game and re-installed it but still got the error messages. Attached is part of one of them.
______________________
—> Crash <—
Assertion: !transferRejected
File: ..\..\..\Engine\Gr\GrTex2d.cpp(4342)
App: Gw2.exe
Pid: 2668
Cmdline:
BaseAddr: 00400000
ProgramId: 101
Build: 20941
When: 2013-07-17T01:40:54Z 2013-07-16T21:40:54-04:00
Uptime: 0 days 0:19:30
Flags: 0
_______________________
Please any help will be greatly appreciated, i really enjoy playing this game but these crashes are really deterring me from playing any more.

Shenanigans.6927:

I have been playing guild wars since feburary, with no issues. But as of the end of june beginning of july i have been riddled with Critical Errors. i can no longer play the game for no more then 20-30 mins at a time and every time it crashes it give me a different error. My memory is good, i have 8gb of ram and a 6 core processor (AMD FX6100) and a Raydeon 9700 hd graphics card running off Windows 7 64 bit. I have uninstalled the game and re-installed it but still got the error messages. Attached is part of one of them.
______________________
—> Crash <—
Assertion: !transferRejected
File: ..\..\..\Engine\Gr\GrTex2d.cpp(4342)
App: Gw2.exe
Pid: 2668
Cmdline:
BaseAddr: 00400000
ProgramId: 101
Build: 20941
When: 2013-07-17T01:40:54Z 2013-07-16T21:40:54-04:00
Uptime: 0 days 0:19:30
Flags: 0
_______________________
Please any help will be greatly appreciated, i really enjoy playing this game but these crashes are really deterring me from playing any more.

I’m not sure what to try besides some things that likely won’t fix it or are in the wrong. I would first make a support ticket to ArenaNet and see what they say.

Then, do some goofy things, like delete the local.dat file since its recreated when launching the game. This will reset any changes you have made to your settings.

You can also make sure your CPU and GPU temperatures are within their limits. If you don’t already have software that monitors your CPU and GPU temperatures, then I recommend getting HWMonitor, which can be found here:
http://www.cpuid.com/downloads/hwmonitor/1.23-setup.exe

Possibly a repair of the client? Confirm running as admin? Really not sure here either, have never seen this error. A ticket may definitely be in order.