On installing ADABAS 6.3 CE for windows:"PATH CANNOT BE SET"

On installing ADABAS 6.3 CE for Windows, I got this message “PATH CANNOT BE SET”, and this one when running WORKBENCH “Could not access C:\ProgramData\SoftwareAG\Adabas\etc\ADABAS.INI for Reading and writing”

What can I do for fixing it?

Thanks in advance, JP