[plt-scheme] Error installing SchemeUnit 2.0

Hi all,

I received the following install error when trying to install  
SchemeUnit 2.0 (under PLT v352):

setup-plt: Compiling .zos used by schemeunit
setup-plt:   in /Users/jteach/Library/PLT Scheme/352/collects/ 
schemeunit/
assert-base.ss:65:19: compile: unbound variable in module in: make- 
exn:application:type
setup-plt: Done setting up
setup-plt:
setup-plt: Error during Compiling .zos for schemeunit (/Users/jteach/ 
Library/PLT Scheme/352/collects/schemeunit)
setup-plt:   assert-base.ss:65:19: compile: unbound variable in  
module in: make-exn:application:type

Likewise, when I try to require the schemeunit modules:
  ../../../Library/PLT Scheme/352/collects/schemeunit/assert-base.ss: 
65:19: expand: unbound variable in module in: make-exn:application:type


Any suggestions?

jmj