step back to previous version of ADE - why no hand tool?

Hi

I bought some architectural e-books, monographs earlier.

Once I upgraded my ADE to the version 4.5.4, but i find it very uncomfortable to read/view my e-books. No option to have a double page view, no hand tool to navigate.

In the previous version of ADE all was better, i installed the ADE 3.0 but it cannot open my books. it says, e adept internal error.

Any solution?

thank you