What have you done to the sketch?

@@ -1850,7 +1852,7 @@ void GrabPairAddressString(String stringToParse, String triggerString)
// reference then I wouldn't need the fancy two-functions version below.
// Not sure if jumping through these hoops is helping me much, memory-wise.
// ----------------------------------------------------------------------------
-void Log(String &logMessage)
+void Log(const String &logMessage)
{
BaseLog(logMessage);
}
@@ -1861,7 +1863,7 @@ void Log(__FlashStringHelper* logMessage)
BaseLog(tempLogMessage);
}

-void BaseLog(String &logMessage)
+void BaseLog(const String &logMessage)
{
// Variable used in time calculations.
static unsigned long currentOutputLineMillis = 0;