Index: i2t-generate/InstallIt/Generators/Bin.rb
===================================================================
--- i2t-generate/InstallIt/Generators/Bin.rb	(revision 26479)
+++ i2t-generate/InstallIt/Generators/Bin.rb	(working copy)
@@ -272,6 +272,15 @@
   fi
 fi
 
+type bzcat > /dev/null 2>&1
+if test $? -ne 0; then
+  cat >&2 <<EOF
+Unable to find command bzcat. This installer requires
+bzip2 to extract itself, please install it and try again.
+EOF
+  exit 1
+fi
+
 i2t_check "$0"
 
 if test ! -d "${BUILDDIR}"; then