As title says and the export fails make sure VSTi/DXi Synth is ticked in Midi/Audio Drivers Setup and a Synth is in the default slot.

Follow this thread for more info.
http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=484690#Post484690

Regards
Brian


Brian Cadoret
BIAB 2025 Pro build 1125e with BIAB2023 UltraPAK . Samplitude Pro X4 Suite. Mixcraft 10.5 Pro Studio
Focusrite 2i2 Scarlett
Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz 3.20 GHz
Installed RAM 8.00 GB