This is caused by a bad registry key.
Can you check the following keys under the following registry location:
Check all of the entries with numbers - if the string value is
empty/missing, please populate it with:
c_xxx.nls (like the rest of the values in this section of the registry) xxx is the number in the name of the registry key. eg, 870 would need c_870.nls to be entered as the value.
and the other values, respectively, c_949.nls, c_950.nls, etc.
restart the pc, then try updates again.