diff --git a/.gitignore b/.gitignore
index 7f2ad27..0ae6b2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ include
 *.pdf
 *.*log
 StreamVersion.h
+*.local
diff --git a/Makefile b/Makefile
index 4e56eec..5a2e3c9 100644
--- a/Makefile
+++ b/Makefile
@@ -21,21 +21,10 @@
 # along with StreamDevice. If not, see https://www.gnu.org/licenses/.
 #########################################################################/
 
-TOP = ..
-ifneq ($(wildcard ../configure),)
-  # We are in an EPICS R3.14+ <TOP> location
-  include $(TOP)/configure/CONFIG
-else ifneq ($(wildcard ../config),)
-  # We are in an EPICS R3.13 <TOP> location
-  CONFIG = $(TOP)/config
-  include $(TOP)/config/CONFIG_APP
-else
-  # Using our own local configuration
-  TOP = .
-  DIRS = configure
-  src_DEPEND_DIRS := $(DIRS)
-  include $(TOP)/configure/CONFIG
-endif
+TOP = .
+DIRS = configure
+src_DEPEND_DIRS := $(DIRS)
+include $(TOP)/configure/CONFIG
 
 DIRS += src
 DIRS += streamApp
diff --git a/docs/setup.html b/docs/setup.html
index 28c3d20..98fe6ec 100644
--- a/docs/setup.html
+++ b/docs/setup.html
@@ -54,15 +54,17 @@ git clone https://github.com/paulscherrerinstitute/StreamDevice.git
 <p class="new">
 <em>StreamDevice</em> now comes with a standard
 <kbd>configure</kbd> directory.
-But it can still be built in an external <em>&lt;top&gt;</em>
+<del>But it can still be built in an external <em>&lt;top&gt;</em>
 directory as in previous versions.
 It will automatically detect <em>&lt;top&gt;</em> locations
 from the presence of <kbd>../configure</kbd> or <kbd>../config</kbd>
-directories.
+directories.</del> Using an upper level <kbd>../configure</kbd> is
+no longer supported due to compatibility issues with <em>SynApps</em>.
 </p>
 <p class="new">
 Edit the <kbd>configure/RELEASE</kbd> file to specify the install location
-of EPICS base and of additional software modules, for example:
+of EPICS base and of additional software modules or add a
+<kbd>configure/RELEASE.local</kbd> file to overwrite, for example:
 <pre>
 EPICS_BASE=/home/epics/base-3.16.1
 </pre>
diff --git a/src/Makefile b/src/Makefile
index 9759b55..280a219 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -21,16 +21,8 @@
 # along with StreamDevice. If not, see https://www.gnu.org/licenses/.
 #########################################################################/
 
-TOP = ../..
-ifneq ($(wildcard ../../configure),)
-  include $(TOP)/configure/CONFIG
-else ifneq ($(wildcard ../../config),)
-  include $(TOP)/config/CONFIG_APP
-  include $(TOP)/config/RULES_ARCHS
-else
-  TOP= ..
-  include $(TOP)/configure/CONFIG
-endif
+TOP= ..
+include $(TOP)/configure/CONFIG
 
 -include CONFIG_STREAM
 -include ../CONFIG_STREAM
diff --git a/streamApp/Makefile b/streamApp/Makefile
index 0b4198e..2dc48ae 100644
--- a/streamApp/Makefile
+++ b/streamApp/Makefile
@@ -21,16 +21,8 @@
 # along with StreamDevice. If not, see https://www.gnu.org/licenses/.
 #########################################################################/
 
-TOP = ../..
-ifneq ($(wildcard ../../configure),)
-  include $(TOP)/configure/CONFIG
-else ifneq ($(wildcard ../../config),)
-  include $(TOP)/config/CONFIG_APP
-  include $(TOP)/config/RULES_ARCHS
-else
-  TOP= ..
-  include $(TOP)/configure/CONFIG
-endif
+TOP= ..
+include $(TOP)/configure/CONFIG
 
 PROD = streamApp
 DBD  = streamApp.dbd