Burning to CD

After finalizing my recording of a vinyl LP into .wav format and copying the files, with labels into Windows Media to burn to CD, the first and last tracks were marked as “Error”. Something about codec? What is going on? Do I need to put some silence before the first track and after the last? Very frustrating after spending hours editing the tracks. Oh…Audacity version 1.2.6

Any help? Thanks

When you open up your exported WAV files, what are the specifications? Are they 44100, 16-bit, Stereo?
Right Click the file > Properties > either Extended or Summary.

A typical error is try to manage 32-bit Floating files instead of 16 bit. Those will act weird, and Audacity likes to make those.