ORTSAdhesion ( ORTSCurtius_Kniffler ( 0.1 0.1 0.1 0.1 ) )
and it worked. So I think also this
ORTSAdhesion ( ORTSCurtius_Kniffler (7.5 44 0.861 0.7 ) )
should work.
Probably it is as Gehe says: OR does not like to have a nested block in the same line of the containing block.