Guild Wars 2

Try this:

1 Click on the “Finder” icon located in your dock or the desktop of your computer to make “Finder” the active program in the Finder menu bar.
2 Hold down the “Option” key on your keyboard while clicking “Go” in the Finder menu bar. A dropdown will appear.
3 While still holding down the “Option” key, click on “Library” in the “Go” dropdown.
4 Once in the Library folder click on Application Support > Guild Wars 2
5 Move the entire Guild Wars 2 folder to the trash and then empty the trash.

The next time you launch Guild Wars 2 it will create a new version of the folder that you deleted.

Please launch Guild Wars 2 and see if you are able to log in and play without issues.

I also have a mouse issue on the mac. I am using a logitec trackman and sometimes the screen keeps spinning out of control and I have to restart the client. I use the same mouse on the Windows version of GW2 with no issues.
Model Name: iMac
Model Identifier: iMac12,2
Processor Name: Intel Core i5
Processor Speed: 2.7 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 20 GB
Boot ROM Version: IM121.0047.B1F
SMC Version (system): 1.72f2