Hello trabifant and welcome.
You are the great winner: all error message in the "same time"
For the windows with title "Asuite" (blank and no active document) :
Go to the folder \Apps\Asuite, delete the ASuite.xml and rename the last ASuite.xml.***.bak into ASuite.xml.
For application error message: you seem to be on windows seven so use downward compatibility.
Edit: hello laurent