1.8 selfupdate to 1.8.1 fails resulting in Tcl problems

[ben-macports@…]

After reinstalling Macports 1.8.0 after migrating from Leopard to Snow Leopard. I upgraded OS X from 10.6 --> 10.6.1. On 28 September 2009, I ran "sudo port selfupdate" to upgrade from 1.8.0 to the new 1.8.1 which resulted in the following error when running port:

~ benc$ port dlopen(/Library/Tcl/macports1.0/MacPorts.dylib, 10): no suitable image found. Did find:

/Library/Tcl/macports1.0/MacPorts.dylib: mach-o, but wrong architecture

while executing

"load /Library/Tcl/macports1.0/MacPorts.dylib"

("package ifneeded macports 1.0" script) invoked from within

"package require macports"

(file "/opt/local/bin/port" line 39)