Wavelab LE and Sonar

Been trying to use Wavelab LE as the audio editor
few questions.... 
 
1) I've succeeded in getting wavelab to open and load back..
 
wavelab seems to leaves temporary files in the  
C:\Users\USer1\AppData\Local\Temp   folder..  
 
I've tested this with wavosaur and this not trace/files.....  wavelab   leaves  SOUNDNAME.gpk file.
Is there any way of stopping this being produced?
 
 
 
2) Problem 2 ............. Wavelab refuses to play any 'bounced' audio from Sonar - is there anyway of fixing this?