I had several times problems with woocommerce integration in combination with sonaar templates! 

This time, i installed woocommerce first and test it with serving a virtual product to download after puchasing! Everything works fine! 
Then i installed woocommerce and i get displayed, the same problem as everytime! It seems, that sonaar crushes my database, so i get displayed "The download log entry could not be inserted into the database." when i or someone else want to download the purchased file! Also when i copy the link from the back end or someone clicks the link in the e-mail, this failure is displayed! Before i installed sonaar - everything worked fine! 

i tried to contact woocommerce, but they send me to sonaar, because, it happens when i installed your theme (it makes no difference which of the sonaar templates i install!)

also when i deavtivate all the plugins the failure can´t be removed! 

I need your help!