Fall back to echo if ECHOCMD is empty early during execution of program

include/functions

@@ -660,9 +660,9 @@
         RemoveTempFiles
         LogText "${PROGRAM_NAME} ended with exit code 1."
         if [ $# -eq 1 ]; then
-            ${ECHOCMD} ""
-            ${ECHOCMD} "${RED}Fatal error${NORMAL}: ${WHITE}$1${NORMAL}"
-            ${ECHOCMD} ""
+            ${ECHOCMD:-echo} ""
+            ${ECHOCMD:-echo} "${RED}Fatal error${NORMAL}: ${WHITE}$1${NORMAL}"
+            ${ECHOCMD:-echo} ""
         fi
         exit 1
     }