A VMware user posted on VMTN Forums a workaround to avoid Glib and GdkPixbuf-CRITICAL errors when running Debian Sarge AMD64 OS inside a Workstation 5.5.1 virtual machine:
- run apt-get install ia32-libs
- get ia32-libs-gtk_7_amd64.deb (or later) from here and install it
- run GCONV_PATH=/usr/lib32/gconv vmware