Hey, I have being using Adobe Digital editions for a long time, but lately the 'Recently Read' function does not update!

Hey, I use a Macbook, and recently upgraded to OSX Yosemite, and all hell broke loose.

1. My computer crashes on average 8 times a day.

2. Always crashes after  playing a video- Youtube, etc.

3. The Wi-Fi plays hide & seek. Had to move modem/ table to use a cable. 

and most disappointing

4.Adobe Digital Edition has stopped updating "Recently Read' function, and does not save 'highlights' and 'bookmarks' anymore.

Hope I get help here, or will transfer my books to another platforms like ibooks,..

My ADE version is: 2.0.1.78765

Nilyad