diff --git a/runprebuild.bat b/runprebuild.bat
index 0bee6f5781..68830aabe7 100755
--- a/runprebuild.bat
+++ b/runprebuild.bat
@@ -58,4 +58,8 @@ rem To compile in debug mode
     @echo %ValueValue% opensim.sln > compile.bat
 rem To compile in release mode comment line (add rem to start) above and uncomment next (remove rem)
 rem @echo %ValueValue% /P:Config=Release opensim.sln > compile.bat
-:done
\ No newline at end of file
+:done
+if exist "bin\addin-db-002" (
+	del /F/Q/S bin\addin-db-002 > NUL
+	rmdir /Q/S bin\addin-db-002
+	)
\ No newline at end of file
diff --git a/runprebuild.sh b/runprebuild.sh
index fd411bb7df..6848188ff9 100755
--- a/runprebuild.sh
+++ b/runprebuild.sh
@@ -5,7 +5,6 @@ case "$1" in
   'clean')
 
     mono bin/Prebuild.exe /clean
-
   ;;
 
 
@@ -24,3 +23,5 @@ case "$1" in
   ;;
 
 esac
+    rm -fr bin/addin-db-002
+