Hi killerdemouches,
The Mac OS 10.8.4 update did not apply fully to your system, which is almost certainly the cause of the crash. Your panic logs show:
Mac OS version:
12E55
which is Mac OS 10.8.4, so I can see that you have attempted to install the update, however the same panic logs show:
Kernel version:
Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64
which is the Mac OS 10.8.3 kernel. Fusion cannot run while the system is in this inconsistent state.
Here's how to resolve this problem:
1. Launch Disk Utility and use the First Aid tab to verify all of your disks.
2. If your Mac has multiple hard disk drives using software RAID, use Disk Utility again to verify that your RAID set is not degraded. If it is degraded, rebuild it.
3. If VMware Fusion still fails, download the Mac OS 10.8.4 Combo Updater and apply it again, which should restore the system to a consistent state if the above steps have been followed.
Let us know if that resolves the problem there!
Cheers,
--
Darius