Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -1,10 +1,10 @@
 # make install CSCOPTS='-accumulate-profile -profile-name $(PWD)/profile-ww$(shell date +%V.%u)'
 # rm <files>.o ; make install CSCOPTS='-profile' ; ... ;  chicken-profile | less
 
 PREFIX=$(PWD)
-CSCOPTS= 
+CSCOPTS=-O4
 INSTALL=install
 SRCFILES = common.scm items.scm launch.scm \
    ods.scm runconfig.scm server.scm configf.scm \
    db.scm keys.scm margs.scm megatest-version.scm \
    process.scm runs.scm tasks.scm tests.scm genexample.scm \

Index: common.scm
==================================================================
--- common.scm
+++ common.scm
@@ -554,11 +554,11 @@
   (let ((res (assoc key lst)))
     (if res (cadr res)(if (null? default) #f (car default)))))
 
 (define (common:get-testsuite-name)
   (or (configf:lookup *configdat* "setup" "testsuite" )
-      (if *toppath* 
+      (if (string? *toppath* )
           (pathname-file *toppath*)
           (pathname-file (current-directory)))))
 
 (define (common:get-db-tmp-area)
   (if *db-cache-path*

Index: utils/installall.sh
==================================================================
--- utils/installall.sh
+++ utils/installall.sh
@@ -34,19 +34,23 @@
 echo You are using proxy="$proxy"
 echo 
 echo "Set additional_libpath to help find gtk or other libraries, don't forget a leading :"
 
 SYSTEM_TYPE=$(lsb_release -irs |tr ' ' '_' |tr '\n' '-')$(uname -i)-$OPTION
+CHICKEN_VERSION=4.11.0
+CHICKEN_BASEVER=4.11.0
 
 # Set up variables
 #
 case $SYSTEM_TYPE in
 Ubuntu-16.04-x86_64-std)
 	KTYPE=32
 	CDVER=5.10
 	IUPVER=3.17
 	IMVER=3.11
+	CHICKEN_VERSION=4.12.0
+	CHICKEN_BASEVER=4.12.0
 	;;
 Ubuntu-16.04-i686-std)
 	KTYPE=32
 	CDVER=5.10
 	IUPVER=3.17
@@ -110,12 +114,10 @@
 
 # Put all the downloaded tar files in tgz
 mkdir -p tgz
 
 # http://code.call-cc.org/releases/4.8.0/chicken-4.8.0.5.tar.gz
-export CHICKEN_VERSION=4.11.0
-export CHICKEN_BASEVER=4.11.0
 chicken_targz=chicken-${CHICKEN_VERSION}.tar.gz
 if ! [[ -e tgz/$chicken_targz ]]; then 
     wget http://code.call-cc.org/releases/${CHICKEN_BASEVER}/${chicken_targz}
     mv $chicken_targz tgz
 fi