Upgarding from RAD Server 11 to RAD Server 12

[Alex_mex 0]

I'm trying to upgrade production RAD Server 11 to RAD Server 12.

 

I did not find manual to do this upgrade, so I've copied all necessary files to wwwroot/RADServer and tried to start  EMSDevServer to update emsserver.ib but I got the error "The application was unnable to start correctly..."

What I'm missing? Should I reinstall Interbase? If yes, how to deal with production license?

 

Where I can find manual for upgrade?

 

I do not know what to do. I'll appreciate any help to figure out how to run new server

[Brian Evans 83]

There is a help topic (been the same for a few versions); Upgrading Your RAD Server Engine - RAD Studio (embarcadero.com)

[Alex_mex 0]

That was I exactly did, and the result is an error "The application was unnable to start correctly..."

 

Now I can not use RAD Studio 12 to build emsserver.bpl, and I can not use RAD Studio 11 because upgrade of my development computer was done without problems...

 

It is incredible that software that costs that much money does not have any simple intruction or tool to do the upgrade!!!