I have received an e-mail from SDRPLAY with a fix.
Their response is pasted below. Thanks SDRPLAY!
the initial installer for 1.33 had a logging problem that affected the second instance of SDRuno for the slave tuner with the RSPduo. This has now been corrected. If you downloaded the software on the day it was first released, please download and install the software again. If you still have the original installer on your hard drive, please delete it before downloading for the second time. This should resolve you problem.
Your SDRplay Support Helpdesk Team