[bmcs]

I have spent a large part of the day checking out Calibre 4.0 and there a few nice improvements, but for me the e-book viewer is a total disaster. The litany of issues and defects are far too many to recount here.
Has anyone found a mechanism by which to disable/uninstall the e-book viewer and force Calibre to always use an external program to read all books in a library.
Dave