Re-install NIS 21.4.0.13

Running windows 7, 64 bit, fully patched. Got the dreaded re-install NIS message, did it, then 30 minutes later, I get the same error, telling me to re-install again.

 

Seems very odd that NIS would ask for 2 re-installs 30 minutes apart. Seems more a Norton issue than Windows.

 

 This is on NIS 21.4.0.13

 

[clarified subject]