Runtime Error

I'm trying to set up an unattended monitor but can't keep the WSPR software running for any extended period. I turn things on and walk away with everything FB. Within a day it drops out and I get the following:

"Microsoft Visual C++ Runtime Library
"Runtime Error: Program: C:\WSPR\wspr.exe
"This application has requested the Runtime to terminate it in an unusual way.
"Please contact the application's support team for more information."

Running WSPR 2.2 r3617 on Windows 10.