ERROR(ORCAP-19005) Viewer was not found.

Hi, I am novice please help me. 

When I have already an "ORCAD Capture" opened, and when I want to open also "OrCAD Capture View-Only",  I get this error message:   ERROR(ORCAP-19005) c:-\ viewer was not found.

But if I close OrCAD Capture, then I can open OrCAD Capture VIEW-Only.

I wonder is it only me, or it is normal....you cannot open a second Capture application, when one is already opened??

 Thanks for your answer.