Is there a library issue between 9.0 and 9.1 -ThreadRuneLocale ?

[Michael Gass]

Cannot update my ports.  Run portsnap followed by
portmaster -a and various ports will not update.
Keep getting error msg of 
Undefined symbol: "_ThreadRuneLocale"
This happens for instance in updating to png-1.5.15 or
to freetype2.

Are there library issues between 9.0 and 9.1?
I am running 9.0-stable on an i386

Last time I updated was in March and that went well.

Do I need to uninstall all my ports and start over?
Do I need to move up to 9.1?

-- 
Michael Gass				
mgass at csbsju.edu