Error In Cubase Sx, syncrosoft error when opening midi track Options

[wadat]

when i double in a midi track in sx to open key editor, i get the following message:
syncrosoft POS error message
error signaled by the protected object server:
file 'synsonos.bundle' does not have the expected interface.

any idea anyone?
ps: rickenbaker, thanks for your help th elast time...