After updating Multipath the system did not boot anymore and complains about invalid keywords

Issue

• The system was upgraded to Red Hat Enterprise Linux 5.7 from 5.6. The upgraded version of mutipath is device-mapper-multipath-0.4.7-46.el5_7.1.x86_64. The following messages are seen:

mulipath.conf line 2, invalid keyword: {

mulipath.conf line 8, invalid keyword: {
mulipath.conf line 15, invalid keyword: {
mulipath.conf line 17, invalid keyword: {
mulipath.conf line 36, invalid keyword: devnode_blacklist
mulipath.conf line 37, invalid keyword: {
mulipath.conf line 38, invalid keyword: wwid
mulipath.conf line 39, invalid keyword: devnode
mulipath.conf line 40, invalid keyword: devnode
mulipath.conf line 41, invalid keyword: devnode
mulipath.conf line 42, invalid keyword: }