Bristol_Jonesey
Uncheck "Fast Bounce" - see what happens.
Hi Bristol_Jonesey:
First, very much thanks for your help. Well, I'd tried with unchecking "Fast Bounce" and the same occurs. Sonar only runs well in Audio Exporting with "64 bit engine" unchecked. It's not a capital fail (I can export audio in all bit depth resolutions), but it's a fail ;-)
bitflipper
Most likely explanation, especially if you're using samplers, is that you're running out of memory. Turning off the 64-bit option cuts your RAM requirements nearly in half. Try freezing one or more of your sampled instruments before the export.
Ok, I'll try freezing my sampled instruments, and will see what happens. But it'll be tomorroy. I think my system will not put up with more "restarts" ha ha ha.
Excuse me, please, for my English writing (I'm from Spain) and thank you both (in advance too) for your explanations and attempts to resolve this issue.
Best regards:
musicampo