Some of the issues are probably caused by using the 1.1 API with the 1.0 server. The constant VIX_API_VERSION has been bumped, and server doesn't deal well with the '2' from 1.1 instead of the '1' it expects. Passing in a '1' might solve many of your problems.
However, that doesn't make a lot of sense that the different compilers have different results, so the other possibility is a C runt-time mismatch. The Vix library expects a mutil-threaded, non-debug CRT. If you're letting Visual Studio set up the project, it may be setting you to use a debug CRT, and the threading model could also be incorrect. Unfortunately, if you mix CRT versions, you tend to get ugly crashes.
And errcode 6 is 'not supported'. This is probably because you're trying to use the version 2 API with a version 1 back end.
If you're working with server 1.03, you can stay with the Vix 1.0 that shipped with it.
