Unhandled Exception in VNCviewer.exe: 0xc0000005: Access Violation (2)

[Blether]

(Hi all)

- in RealVNC (v3.3.7) as debugged in VC++ by hitting cancel to the first 'exception' (?) error after the window disappeared just now.  The instruction highlighted is "0040971B   mov         bp,word ptr [ebx]".  W2K (build 2195 SP4) client of Knoppix-Debian built-in Remote Desktop, over minimal 100Mbps home LAN with router/hub.

I'm also getting a lot of errorless shutdowns of the client window, and don't see anything immediately obvious on searching the archives for 'client crash'.  Any ideas ?

Thanks.