From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Description of problem:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
874         for (vis = pScreen->visuals; vis->vid != pScreen->rootVisual; vis++)


Version-Release number of selected component (if applicable):
vnc-server-4.1.1-24

How reproducible:
Always

Steps to Reproduce:
1. Start Xvnc :1
2.
3. 

Actual Results:  Xvnc Free Edition 4.1.1
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 69999902, The X.Org Foundation


Program received signal SIGSEGV, Segmentation fault.
0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
874         for (vis = pScreen->visuals; vis->vid != pScreen->rootVisual; vis++)
Current language:  auto; currently c++
(gdb) bt
#0  0x0000000000413f11 in vfbScreenInit (index=Variable "index" is not available.
) at xvnc.cc:874
#1  0x00000000004317ec in AddScreen (pfnInit=0x413bde <vfbScreenInit>, argc=2, argv=0x7fffffcc6b28) at main.c:781
#2  0x0000000000414259 in InitOutput (screenInfo=0x670de0, argc=2, argv=0x7fffffcc6b28) at xvnc.cc:964
#3  0x0000000000432048 in main (argc=2, argv=0x7fffffcc6b28, envp=Variable "envp" is not available.
) at main.c:372
#4  0x00000039b5f1ce9f in __libc_start_main () from /lib64/libc.so.6
#5  0x0000000000413419 in _start ()
#6  0x00007fffffcc6b18 in ?? ()
#7  0x0000000000000000 in ?? ()


Expected Results:  It runs.

Additional info: