I tried to install ZA free, during the installation, the truevector service repeatedly crashes out, and after rebooting it still crashes and I cannot open the ZA user interface.
Errors in windows application log:
Faulting application vsmon.exe, version 8.0.298.0, time stamp 0x499910e8, faulting module kernel32.dll, version 6.0.6002.18005, time stamp 0x49e037dd, exception code 0xa3410004, fault offset 0x0003fbae, process id 0x140c, application start time 0x01ca415fa1ceb920.

Faulting application zlclient.exe, version 8.0.298.0, time stamp 0x499910e9, faulting module kernel32.dll, version 6.0.6002.18005, time stamp 0x49e037dd, exception code 0xa3410004, fault offset 0x0003fbae, process id 0x6b0, application start time 0x01ca415f5d79f3b6.

PC Info:
Intel Pentium Quad Core
2 GB Ram
Vista Business 32-bit
Avast free AV