Glad you sorted out the problem. Knew it had to be something simple.
I've not really used stereo tracks in Logic yet, as all my recordings have been with mono tracks, but if you look on the channel strip in the arrange window (or the mixer), there is a button with a circle on it under the level indicator. If you click this, it converts the track to stereo.
There are two types of stereo file - interleaved and split. I'm not sure which stereo .wav files are. Logic defaults to interleaved, but you can force it to use split by Logic>Preferences>Audio>General>Force Split Files.
You may also need to tinker with the Universal Track Mode in Preferences>Audio>Driver. This affects the way consecutively numbered tracks play back.
I've not really used stereo tracks in Logic yet, as all my recordings have been with mono tracks, but if you look on the channel strip in the arrange window (or the mixer), there is a button with a circle on it under the level indicator. If you click this, it converts the track to stereo.
There are two types of stereo file - interleaved and split. I'm not sure which stereo .wav files are. Logic defaults to interleaved, but you can force it to use split by Logic>Preferences>Audio>General>Force Split Files.
You may also need to tinker with the Universal Track Mode in Preferences>Audio>Driver. This affects the way consecutively numbered tracks play back.