patch for driver callbacks error handling (take II)

[Dave_Belanger@cimmetry.com]

I regenerated that pacth after a discussion with Alexandre Juillard.

Dave Belanger
Cimmetry Systems Inc.
dave.belanger@cimmetry.com
(514) 735-3219 (ext. 204)
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(See attached file: patch_callbacks_return.txt)

Attachment: patch_callbacks_return.txt
Description: Text - character set unknown