Corrupt file- save project to new folder not working

I have a project that appears to have been corrupted. I can export an audio mixdown and play it within Nero but cannot burn the WAV to disc in Nero. Am told file may be corrupted.

Tried copying project to a new folder on another disc and exporting new mixdown. Same result.

Ideas?

What format are you exporting from Cubase?

Sample rate?
Bit Depth?

Thanks for your prompt reply. I was abducted by life for a few weeks. But anyway, 32bit float, 44.1khz

I would have thought Nero would convert the 32 bit file to 16 bit, but try exporting or converting to the CD standard 16 bit 44.1 KHz