We have exported more as 100.000 files per year (and this over 10 years) with Sonar on 12 to 15 computers, because we digitaze tapes and vinyl. We never had this problem.
Try this:
- uncheck "use 64-bit-engine" in the export dialog (if checked)
- unplug your audiointerface. Exporting is also possible without any audiointerface.
- drag and drop an audioclip to your desktop or to a folder in the windows explorer (this copies the file). This must also work without crashing. This is also working with the unplugged audiocard.
- It can also be a problem with the grafic card (Nvidea audio driver).
- Is there any intern soundcard? If so - Try to disable them.
It's also possible that there are completely wrong settings in the config files for example BounceBufSizeMsec (should be 0) or other wrong settings.