Cannot export .wav with iKaossilator 2.2.2

[mpkayak]

Since my latest updates (iKaossilator 2.2.2 and iOS 6.1.3) on iPhone, all the export to .wav functions don't work. I get a message: "Audio Export Error - Error has occured while exporting audio.". Does anyone else have this problem? anyone knows how to solve it? The export did work once before the recent updates.
I am tempted to delete and re-install the application, but I am afraid I might loose all my loops... I backed-up my phone on PC with iTunes, but I don't see the loops there...
Any help would be greatly appreciated... Thanks!

Mik