1] Download the AWS PV Driver manually from here.
2] Place the AWS PV Driver in C:/ProgramData/ZertoTools/Platform/AWS/Zerto-PvDriver/
NOTE: You may need to create the folder "Zerto-PvDriver". Please ensure it is spelled/punctuated exactly as written above.
3] Run the Zerto Tools.bat file once more with the "-v" option to validate all is well and then move forward with your Failover/Move as desired. In case of a Failover, ensure a checkpoint is selected which has a timestamp from after the validation succeeded to ensure Zerto Tools is ready to go.