haven't payed much attention to errors.log ever but as I was checking some logs today i found this:

build 9L30
MacOS version 1058
This is an x86 Macintosh with a Pentium processor.
Hardware: (7 4:i386 CPU_SUBTYPE_INTEL(4, 0)) iMac8,1 @ 2800 MHz (x2), 4096 MB
archive returned 0
[Fri Aug 21 22:40:27 2009] Can't load driver /Vendetta.app/drivers/gkvc.dylib: not a Mach-O MH_BUNDLE file type
[Fri Aug 21 22:40:27 2009] Can't load driver /Vendetta.app/drivers/libfmodex.dylib: not a Mach-O MH_BUNDLE file type
[Fri Aug 21 22:40:27 2009] Found driver: "Mac sound driver". Type 1, Version 8.1. Load @0x0063da40
[Fri Aug 21 22:40:27 2009] Instantiate address: 0x38247c
[Fri Aug 21 22:40:27 2009] Found driver: "OpenGL Reference GKGL driver". Type 5, Version 74.0. Load @0x0063dd80
[Fri Aug 21 22:40:27 2009] Instantiate address: 0x3937f8
sound driver initialized.
[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/mission.updated.ogg (mission.updated)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/mission.updated.ogg (mission.updated)
[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/nfz.warning.enter.ogg (nfz.warning.enter)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/nfz.warning.enter.ogg (nfz.warning.enter)
[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/nfz.warning.leave.ogg (nfz.warning.leave)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/nfz.warning.leave.ogg (nfz.warning.leave)
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled usage: -1
unhandled usage: 134
unhandled usage: 137
unhandled usage: 138
unhandled usage: 139
unhandled usage: 132
unhandled usage: 133
unhandled usage: 130
unhandled usage: 131
unhandled usage: -1
unhandled usage: 140
unhandled usage: 141
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 65281
unhandled page: 6
unhandled page: 8
unhandled page: 8
unhandled page: 8
unhandled page: 8
unhandled page: 8
unhandled page: 255
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 12
unhandled page: 65280
unhandled page: 65280
unhandled page: 65280
unhandled page: 65280
unhandled page: 65280
unhandled page: 255

Rest of it looks OK but I am just wondering if I am supposed to get those errors and unhandled pages at VO startup?

I always do, and never had a problem. I wouldn't worry about it.

Yes, those are normal.

[Fri Aug 21 22:40:27 2009] Can't load driver /Vendetta.app/drivers/gkvc.dylib: not a Mach-O MH_BUNDLE file type
[Fri Aug 21 22:40:27 2009] Can't load driver /Vendetta.app/drivers/libfmodex.dylib: not a Mach-O MH_BUNDLE file type

Means they are trying to be loaded as video/audio drivers, which they are not.

[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/mission.updated.ogg (mission.updated)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/mission.updated.ogg (mission.updated)
[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/nfz.warning.enter.ogg (nfz.warning.enter)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/nfz.warning.enter.ogg (nfz.warning.enter)
[Fri Aug 21 22:40:28 2009] load_sample_ogg: Couldn't open sound/nfz.warning.leave.ogg (nfz.warning.leave)
[Fri Aug 21 22:40:28 2009] load_sample: Couldn't open sound/nfz.warning.leave.ogg (nfz.warning.leave)

These are sounds that haven't been made yet and aren't used, but are still trying to be loaded.

unhandled page: 12
etc...

These are from the enumeration of HID (Human Interface Device) devices. Most are saying they are not HID devices or not device types VO cares about.

So all of them are not to be worried about.

Thanks Ray.