Quote Originally Posted by alanmcf View Post
Hmmm... Sougata's point about starting timer1 sounds like it might be the culprit,
It is!

The line T1CON = %00001101 '<-- settings for 16 MHz turns on the Timer1 Oscillator, which disables RC1's digital I/O functions.

Since you are using the Elapsed Timer, there's no need to set T1CON. The Include file does that for you.
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