Same thing happens.
Windows Media Player error C00D1236
Windows Media Player encountered a problem while syncing the file to the portable device. This error can occur for a variety of reasons.
Things to try:
- Disconnect and reset the device. See your device's documentation for specific instructions about how to perform this procedure.
- Remove the file from the sync list or change the file's properties so that the file isn't hidden. In some cases, this error can occur if you try to sync a hidden file to a device.
Maybe I'll try a soft reset...
Seems to be working now.