tools not working

[jojoserloi]

for the past few weeks, the tools in my utau program haven't been working. everytime i select wavtool4vcv or doppeltler09 in the tools, no sound will play from my utaus. but when i select the "use resempler.dll" box, sound plays, using plugins that i do not want to use. i've uninstalled and reinstalled both the tools and the voicebanks and nothing's working. everything is in the correct folders, too. i really need help, i want to post some covers soon

 

[jojoserloi]

damn

 

[Kiyoteru]

Were they working normally before? Did you make any changes to your computer or the files since then?