Thanks for sorting out the issue of the warnings so promptly. Certainly, upgrading to v. 3.46 stops the warnings. This deals with the immediate annoyance.

However, it doesn't deal with the main issue which is whether OIO should be rewriting &UNIVERSAL::can and &UNIVERSAL::isa, which can make O:IO incompatible with portions of an application that do no use O:IO to create classes.

Thanks